Peer reviewed papers

Publications CoNARTaS (Updated 2023-09-04)

  1. Henningsen AK, Romundstad LB, Gissler M, Nygren KG, Lidegaard O, Skjaerven R, Tiitinen A, Andersen AN, Wennerholm UB, Pinborg A. Infant and maternal health monitoring using a combined Nordic database on ART and safety. Acta Obstet Gynecol Scand 2011;90:683-91.
  2. Wennerholm UB, Henningsen AK, Romundstad LB, Bergh C, Pinborg A, Skjaerven R, Forman J, Gissler M, Nygren K-G, Tiitinen A. Perinatal outcomes of children born after frozen-thawed embryo transfer: A Nordic cohort study from the CoNARTaS group. Hum Reprod 2013;28:2545-53.
  3. Sundh KJ, Henningsen AK, Källen K, Bergh C, Romundstad LB, Gissler M, Pinborg A, Skjaerven R, Tiitinen A, Vassard D, Lannering B, Wennerholm UB. Cancer in children and young adults born after assisted reproductive technology: a Nordic cohort study from the Committee of Nordic ART and Safety (CoNARTaS). Hum Reprod 2014;29: 2050-7.
  4. Henningsen AA, Wennerholm UB, Gissler M, Romundstad LB, Nygren KG, Tiitinen A, Skjaerven R, Nyboe Andersen A, Lidegaard Ø, Forman JL, Pinborg A. Risk of stillbirth and infant death after in-vitro fertilization: A Nordic study from the CoNARTaS group. Human Reprod 2014;29:1090-6.
  5. Henningsen AK, Wennerholm UB, Gissler M, Romundstad LB, Nygren KG, Tiitinen A, Skjaerven R, Andersen AN, Lidegaard O, Forman JL, Pinborg A. Reply: Implication of the liberal use of ART in Nordic countries: should stricter guidelines be created to prevent unnecessary stillbirth and preterm delivery. Hum Reprod 2014;29:2600-1.
  6. Henningsen AA, Gissler M, Skjaerven R, Bergh C, Tiitinen A, Romundstad LB, Wennerholm UB, Lidegaard O, Nyboe Andersen A, Forman JL, Pinborg A. Trends in perinatal health after assisted reproduction: a Nordic study from the CoNARTaS group. Hum Reprod 2015;30:710-6.
  7. Opdahl S, Henningsen AA, Tiitinen A, Bergh C, Pinborg A, Romundstad PR,Wennerholm UB, Gissler M, Skjærven R, Romundstad LB. Risk of hypertensive disorders in pregnancies following assisted reproductive technology: a cohort study from the CoNARTaS group. Hum Reprod 2015;30:1724-31.
  8. Wennberg AL, Opdahl S, Bergh C, Henningsen AK, Gissler M, Romundstad LB, Pinborg A, Tiitinen A, Skjærven R, Wennerholm UB. Effect of maternal age on maternal and neonatal outcomes after assisted reproductive technology. Fertil Steril 2016;106:1142-9.
  9. Ginström Ernstad E, Bergh C, Khatibi A, Källén K, Nilsson S, Westlander G, Wennerholm UB. Neonatal and maternal outcome after blastocyst transfer -a population-based registry study. Am J Obstet Gynecol 2016;214:378.e1-378.e10.
  10. Henningsen AK, Bergh C, Skjaerven R, Tiitinen A, Wennerholm UB, Roimundstad LB, Gissler M, Opdahl S, Nyboe Andersen A, Lidegaard Ö, Forman J, Pinborg A. Trends over time in congenital malformations in live-born children conceived after assisted reproduction technology. Acta Obstet Gynecol Scand. 2018;97:816-23.
  11. Magnusson Å, Wennerholm UB, Källen K, Petzold M, Thurin Kjellberg A, Bergh C. The association between the number of oocytes retrieved and perinatal and maternal outcomes. Hum Reprod 2018;33:1939-47.
  12. Norrman E, Petzold M, Wennerholm UB, Bergh C. School performance in singletons born after assisted reproductive technology. Hum Reprod 2018;33:1948-59.
  13. Spangmose AL, Malchau SS, Henningsen AK, Forman JL, Rasmussen S, Loft A, Schmidt L, Pinborg A. Academic performance in adolescents aged 15-16 years born after frozen embryo transfer compared with fresh embryo transfer: a nationwide registry-based cohort study. BJOG 2019;126:261-9
  14. Ginström Ernstad E, Wennerholm UB, Khatibi A, Petzold M, Bergh C. Neonatal and maternal outcome after frozen embryo transfer: increased risks in programmed cycles. Am J Obstet Gynecol 2019;221:126.e1-126.e18.
  15. Ginström Ernstad E, Spangmose AL, Opdahl S, Henningsen AK, Romundstad LB, Tiitinen A, Gissler M, Wennerholm UB, Pinborg A, Bergh C, Malchau SS. Perinatal and maternal outcome after vitrification and slow-freeze – a Nordic study in singletons from the CoNARTaS group. Hum Reprod 2019;34:2282-9.
  16. Opdahl S, Henningsen AA, Bergh C, Gissler M, Romundstad LB, Petzold M, Tiitinen A, Wennerholm UB, Pinborg AB. Data Resource Profile: Committee of Nordic Assisted Reproductive Technology and Safety (CoNARTaS) cohort. Int J Epidemiol 2020;49:365-366f.
  17. Norrman E, Petzold M, Bergh C, Wennerholm UB. School performance in children born after ICSI. Hum Reprod 2020;35:340-54.
  18. Norrman E, Petzold M, Dalsgaard Clausen T, Henningsen AK, Opdahl S, Pinborg A, Rosengren A, Bergh C, Wennerholm UB. Type 1 Diabetes in Children born after Assisted Reproductive Technology: a register based national cohort study. Hum Reprod 2020;35:221-31.
  19. Henningsen AK, Gissler M, Rasmussen S, Opdahl S, Wennerholm UB, Spangmose AL, Tiitinen A, Bergh C, Romundstad LB, Laivuori H, Lyng Forman J, Pinborg A, Lidegaard Ö. Imprinting disorders in children born after assisted reproductive technology (ART): a Nordic study from the CoNARTaS group. Hum Reprod 2020;35:1178-84.
  20. Spangmose AL, Ginström Ernstad E, Malchau S, Forman J, Tiitinen A, Gissler M., Opdahl S, Romundstad LB, Bergh C, Wennerholm UB, Henningsen AA, Pinborg A. Obstetric and perinatal risks in 4601 singletons and 884 twins conceived after fresh blastocyst transfers: a Nordic study from the CoNARTaS group. Hum Reprod 2020;35:805-15.
  21. Hoff Petersen S, Henningsen AK, Bergh C, Gissler M, Wennerholm UB, Spangmose AL, Tiitinen A, Romundstad LB, Pinborg A, Opdahl S. Time trends in placenta-mediated pregnancy complications after assisted reproductive technologies in the Nordic countries. Am J Obstet Gynecol 2020;223:226.e1-226.e19.
  22. Asserhøj LL, Spangmose AL, Henningsen AK, Clausen TD, Ziebe A, Jensen RB, Pinborg A. Adverse obstetric and perinatal outcomes in 1,136 singleton pregnancies conceived after programmed frozen embryo transfer (FET) compared with natural cycle FET. Fertil Steril 2021;115:947-56.
  23. Spangmose AL, Christensen LH, Henningsen AK, Forman J, Opdahl S, Romundstad LB, Himmelmann K, Bergh C, Wennerholm UB, Tiitinen A, Gissler M, Pinborg A. Cerebral palsy in ART children has declined substantially over time: a Nordic study from the CoNARTaS group. Hum Reprod 2021:19;36:2358-70.
  24. Terho AM, Pelkonen S, Opdahl S, Romundstad LB, Bergh C, Wennerholm UB, Henningsen AA, Pinborg A, Gissler M, Tiitinen A. Birth weight and large-for-gestational-age in singletons born after frozen compared to fresh embryo transfer by gestational week: a Nordic register study from the CoNARTaS group. Hum Reprod 2021;36:1083-109.
  25. Westvik-Johari K, Gissler M, Tiitinen A, Henningsen AK, Pinborg A, Wennerholm UB, Bergh C, Romundstad LB, Opdah S. Separating parental and treatment contributions to perinatal health after fresh and frozen embryo transfer in assisted reproduction: A cohort study with within-sibship analysis. PLoS Med 2021;18:e1003683.
  26. Norrman E, Petzold M, Gissler M, Spangmose AL, Opdahl S, Henningsen AK, Pinborg A, Tiitinen A, Rosengren A, Romundstad LB, Wennerholm UB, Bergh C. Cardiovascular disease, obesity, and type 2 diabetes in children born after assisted reproductive technology: A population-based cohort study. PLoS Med 2021;18:e1003723.
  27. Fagbamigbe AF, Norrman E, Bergh C, Wennerholm UB, Petzold M. Comparison of the performances of survival analysis regression models for analysis of conception modes and risk of type-1 diabetes among 1985-2015 Swedish birth cohort. PLoS One 2021;16:e0253389.
  28. Rönö K, Rissanen E, Bergh C, Wennerholm UB, Opdahl S, Romundstad LB, Henningsen AA, Spangmose AL, Pinborg A, Gissler M, Tiitinen A. The neurodevelopmental morbidity of children born after assisted reproductive technology: a Nordic register study from the Committee of Nordic Assisted Reproductive Technology and Safety group. Fertil Steril 2022;117:1026-37.
  29. Petersen, SH,Westvik-Johari K, Spangmose AL, Pinborg A, Romundstad LB, Bergh C, Åsvold BO,Gissler M, Tiitinen A, Wennerholm UB, Opdahl S. Risk of Hypertensive Disorders in Pregnancy After Fresh and Frozen Embryo Transfer in Assisted Reproduction: A Population-Based Cohort Study With Within-Sibship Analysis. Hypertension. 2023;80(2):e6-e16.
  30. Klemetti R, Perry B, Henningsen AK, Wennerholm UB, Bergh C, Opdahl S, Pinborg A, Romundstad LB, Tiitinen A, Gissler M. Puberty disorders among ART-conceived singletons: a Nordic register study from the CoNARTaS group. Hum Reprod 2022;37:2402-11.
  31. Sargisian N, Lannering B, Petzold M, Opdahl S, Gissler M, Pinborg A, Henningsen AA, Tiitinen A, Romundstad LB, Spangmose AL, Bergh C, Wennerholm UB. Cancer in children born after frozen-thawed embryo transfer: A cohort study. PLoS Med 2022;19:e1004078.
  32. Westvik-Johari K, Lawlor DA, Romundstad LB, Bergh C, Wennerholm UB, Gissler M, Henningsen AKA, Håberg SE, Tiitinen A, Spangmose AL, Pinborg A, Opdahl S. Risk of stillbirth and neonatal death in singletons born after fresh and frozen embryo transfer: cohort study from the Committee of Nordic Assisted Reproduction Technology and Safety. Fertil Steril. 2023;119(2):265-276.
  33. Westvik-Johari K, Håberg SE, Wilcox A, Lawlor DA, Romundstad LB, Bergh C, Wennerholm UB, Gissler M, Henningsen AKA, Tiitinen A, Pinborg A, Opdahl S. The challenges of selective fertility and carryover effects in within-sibship analyses: the effect of assisted reproductive technology on perinatal mortality as an example. Int J Epidemiol. 2023;52(2):403-413.
  34. Søfteland MS, Henningsen AKA, Bergh C, Gissler M, Wennerholm UB, Spangmose AL, Tiitinen A, Romundstad LB, Pinborg A, Opdahl S. Risk of ovarian cancer in mothers after assisted reproductive therapy (ART) – a registry-based cohort study from the Committee of Nordic ART and Safety (“accepted” Br J of Cancer Oct 2022).
  35. Henningsen AA, Opdahl S, Wennerholm UB, Tiitinen A, Rasmussen S, Romundstad LB, Bergh C, Gissler M, Forman JL, Pinborg A. Risk of congenital malformations in live-born singletons conceived with ICSI: a Nordic study from the CoNARTaS group [published online ahead of print, 2023 Jul 11]. Fertil Steril. 2023;S0015-0282(23)00684-2.
  36. Rönö K, Rissanen E, Bergh C, Wennerholm UB, Opdahl S, Romundstad LB, Henningsen AA, Spangmose AL, Pinborg A, Gissler M, & Tiitinen A (2022). The neurodevelopmental morbidity of children born after assisted reproductive technology: a Nordic register study from the Committee of Nordic Assisted Reproductive Technology and Safety group. Fertility and sterility, 117(5), 1026–1037.
  37. Magnus MC, Fraser A, Håberg SE, Rönö K, Romundstad LB, Bergh C, Spangmose AL, Pinborg A, Gissler M, Wennerholm UB, Åsvold BO, Lawlor DA, Opdahl S. Maternal Risk of Cardiovascular Disease After Use of Assisted Reproductive Technologies. JAMA Cardiology. 2023 Aug 9:e232324.
  38. Sandvei MS, Pinborg A, Gissler M, Bergh C, Romundstad LB, van Leeuwen FE, Spaan M, Tiitinen A, Wennerholm UB, Henningsen AK, & Opdahl S. (2023). Risk of ovarian cancer in women who give birth after assisted reproductive technology (ART)-a registry-based Nordic cohort study with follow-up from first pregnancy. British journal of cancer, 128(5), 825–832. 
  39. Henningsen AA, Opdahl S, Wennerholm UB, Tiitinen A, Rasmussen S, Romundstad LB, Bergh C, Gissler M, Forman JL, Pinborg A. Risk of congenital malformations in live-born singletons conceived after intracytoplasmic sperm injection: a Nordic study from the CoNARTaS group. Fertil Steril. 2023 Nov;120(5):1033-1041. doi: 10.1016/j.fertnstert.2023.07.003. Epub 2023 Jul 11. PMID: 37442533.