BMC Pregnancy and Childbirth, Volume 17, No. 1, Year 2017
PLoS ONE, Volume 13, No. 1, Year 2018
PLoS ONE, Volume 15, No. 7 July, Year 2020
BMC Public Health, Volume 22, No. 1, Year 2022
BMC Health Services Research, Volume 20, No. 1, Year 2020
BMC Public Health, Volume 19, No. 1, Year 2019
BMC Pregnancy and Childbirth, Volume 14, No. 1, Year 2014