Bdolah, Y., Lam, C., Rajakumar, A., Shivalingappa, V., Mutter, W., Sachs, B.P., Lim, K.H., Bdolah-Abram, T., Epstein, F.H., and Karumanchi, S.A. (2008). Twin pregnancy and the risk of preeclampsia: Bigger placenta or relative ischemia? American Journal of Obstetrics and Gynecology 198(4): 428.e1–428.e6.

Weblink	doi:10.1016/j.ajog.2007.10.783
Download reference in	RIS | BibTeX

Bulmer, M.G. (1970). The biology of twinning in man. Oxford: Clarendon Press.

Download reference in

RIS | BibTeX

Chang, W., Cheng, J., Allaire, J.J., Sievert, C., Schloerke, B., Xie, Y., Allen, J., McPherson, J., Diepert, A., and Borges, B. (2021). Package ‘shiny [version 1.7.1] [electronic resource].

Weblink	https://cran.r-project.org/web/packages/shiny ...
Download reference in	RIS | BibTeX

Choi, Y., Bishai, D., and Minkovitz, C.S. (2009). Multiple births are a risk factor for postpartum maternal depressive symptoms. Pediatrics 123(4): 1147–1154.

Weblink	doi:10.1542/peds.2008-1619
Download reference in	RIS | BibTeX

Delobel-Ayoub, M., Arnaud, C., White-Koning, M., Casper, C., Pierrat, V., Garel, M., Burguet, A., Roze, J.C., Matis, J., Picaud, J.C., and Kaminski, M. (2009). Behavioral problems and cognitive performance at 5 years of age after very preterm birth: the EPIPAGE Study. Pediatrics 123(6): 1485–1492.

Weblink	doi:10.1542/peds.2008-1216
Download reference in	RIS | BibTeX

Frejka, T., Sobotka, T., Hoem, J.M., and Toulemon, L. (2008). Summary and general conclusions: Childbearing trends and policies in Europe. Demographic Research 19(2): 5–14.

Weblink	doi:10.4054/DemRes.2008.19.2
Download reference in	RIS | BibTeX

Fresson, J., Ego, A., Rey, S., Mouquet, M.C., Jay, N., and Blondel, B. (2015). Analyse de la mortinatalité par le Programme de médicalisation du système d’information (PMSI): Premiers résultats nationaux. Revue d’épidémiologie et de santé publique 63: 8–9.

Weblink	doi:10.1016/j.respe.2015.01.014
Download reference in	RIS | BibTeX

Guo, G. and Grummer-Strawn, L.M. (1993). Child mortality among twins in less developed countries. Population Studies 47(3): 495–510.

Weblink	doi:10.1080/0032472031000147266
Download reference in	RIS | BibTeX

Harlap, S. (1979). Multiple births in former oral contraceptive users. British Journal of Obstetrics and Gynaecology 86(7): 557–562.

Weblink	doi:10.1111/j.1471-0528.1979.tb10809.x
Download reference in	RIS | BibTeX

Heuser, R.L. (1967). Multiple births: United States -1964. US Department of Health, Education, and Welfare, Public Health Service, Data from the National Vital Statistics System, Series (14).

Download reference in

RIS | BibTeX

Hoekstra, C., Zhao, Z.Z., Lambalk, C.B., Willemsen, G., Martin, N.G., Boomsma, D.I., and Montgomery, G.W. (2008). Dizygotic twinning. Human Reproduction Update 14(1): 37–47.

Weblink	doi:10.1093/humupd/dmm036
Download reference in	RIS | BibTeX

Hyndman, R., Athanasopoulos, G., Bergmeir, C., Caceres, G., Chhay, L., O’Hara-Wild, M., Petropoulos, F., Razbash, S., Wang, E., and Yasmeen, F. (2022). forecast: Forecasting functions for time series and linear models. R package version 8.16 [electronic resource].

Weblink	https://pkg.robjhyndman.com/forecast/
Download reference in	RIS | BibTeX

Hyndman, R. and Khandakar, Y. (2008). Automatic time series forecasting: The forecast package for R. Journal of Statistical Software 26(3): 1–22.

Weblink	doi:10.18637/jss.v027.i03
Download reference in	RIS | BibTeX

Jena, A.B., Goldman, D.P., and Joyce, G. (2011). Association between the birth of twins and parental divorce. Obstetrics and Gynecology 117(4): 892–897.

Weblink	doi:10.1097/AOG.0b013e3182102adf
Download reference in	RIS | BibTeX

Johnson, R.C. and Schoeni, R.F. (2011). Early-life origins of adult disease: National longitudinal population-based study of the United States. American Journal of Public Health 101(12): 2317–2324.

Weblink	doi:10.2105/AJPH.2011.300252
Download reference in	RIS | BibTeX

Larroque, B., Bréart, G., Kaminski, M., Dehan, M., André, M., Burguet, A., Grandjean, H., Ledésert, B., Lévêque, C., Maillard, F., Matis, J., Rozé, J.C., and Truffert, P. (2004). Survival of very preterm infants: Epipage, a population based cohort study. Archives of Disease in Childhood-Fetal and Neonatal Edition 89(2): 139–144.

Weblink	doi:10.1136/adc.2002.020396
Download reference in	RIS | BibTeX

Martin, J.A. and Osterman, M.J. (2019). Is twin childbearing on the decline? Twin births in the United States, 2014–2018. NCHS Data Brief.

Download reference in

RIS | BibTeX

Monden, C., Pison, G., and Smits, J. (2021). Twin Peaks: More twinning in humans than ever before. Human Reproduction 36(6): 1666–1673.

Weblink	doi:10.1093/humrep/deab029
Download reference in	RIS | BibTeX

Monden, C. and Smits, J. (2017). Mortality among twins and singletons in sub-Saharan Africa between 1995 and 2014: A pooled analysis of data from 90 Demographic and Health Surveys in 30 countries. The Lancet Global Health 5(7): e673–e679.

Weblink	doi:10.1016/S2214-109X(17)30197-3
Download reference in	RIS | BibTeX

Pison, G. (1992). Twins in sub-Saharan Africa: Frequency, social status and mortality, in mortality and society in sub-Saharan Africa. In: van de Walle, E., Pison, G., and Sala-Diakanda, D.M. (eds.). Mortality and society in sub-Saharan Africa. Oxford: Clarendon Press: 253–278.

Download reference in

RIS | BibTeX

Pison, G. and Couvert, N. (2004). The frequency of twin births in France: The triple influence of biology, medicine and family behavior. Population 59(6): 765–794.

Weblink	doi:10.3917/pope.406.0765
Download reference in	RIS | BibTeX

Pison, G. and D’Addato, A.V. (2006). Frequency of twin births in developed countries. Twin Research and Human Genetics 9(2): 250–259.

Weblink	doi:10.1375/twin.9.2.250
Download reference in	RIS | BibTeX

Pison, G., Monden, C., and Smits, J. (2015). Twinning rates in developed countries: Trends and explanations. Population and Development Review 41(4): 629–649.

Weblink	doi:10.1111/j.1728-4457.2015.00088.x
Download reference in	RIS | BibTeX

Rauh-Hain, J.A., Rana, S., Tamez, H., Wang, A., Cohen, B., Cohen, A., Brown, F., Ecker, J.L., Karumanchi, S.A., and Thadhani, R. (2009). Risk for developing gestational diabetes in women with twin pregnancies. Journal of Maternal-Fetal and Neonatal Medicine 22(4): 293–299.

Weblink	doi:10.1080/14767050802663194
Download reference in	RIS | BibTeX

Wyns, C., Bergh, C., Calhaz-Jorge, C., De Geyter, C., Kupka, M.S., Motrenko, T., Rugescu, I., Smeenk, J., Tandler-Schneider, A., Vidakovic, S., and Goossens, V. (2020). ART in Europe, 2016: Results generated from European registries by ESHRE. Human Reproduction Open 3.

Weblink	doi:10.1093/hropen/hoaa032
Download reference in	RIS | BibTeX