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BMC Health Services Research > 2019 > 19 > 1 > 1-9
BMC Pregnancy and Childbirth > 2018 > 18 > 1 > 1-10
Public Health > 2018 > 160 > C > 129-142
BMC Pregnancy and Childbirth > 2017 > 17 > 1 > 1-8
Environmental Health and Preventive Medicine > 2017 > 22 > 1 > 1-7
BMC Health Services Research > 2017 > 17 > 1 > 1-10
Public Health > 2016 > 141 > C > 63-73
BMC Medical Informatics and Decision Making > 2016 > 16 > 1 > 1-8
Estudios Gerenciales > 2015 > 31 > 134 > 30-40
International Journal of Gynecology and Obstetrics > 2011 > 115 > 3 > 244-250