BMC Pregnancy and Childbirth, Volume 15, No. 1, Year 2015
BMC Women's Health, Volume 16, No. 1, Year 2016
PLoS ONE, Volume 13, No. 2, Year 2018
BMC Pregnancy and Childbirth, Volume 13, Year 2013
The Lancet, Volume 388, No. 10040, Year 2016
Journal of Biosocial Science, Volume 50, No. 6, Year 2018