BMC Public Health, Volume 11, Year 2011
Human Resources for Health, Volume 13, No. 1, Year 2015
BMC Health Services Research, Volume 10, Year 2010
BMC Pregnancy and Childbirth, Volume 11, Year 2011
BMC Pregnancy and Childbirth, Volume 12, Year 2012
African journal of reproductive health, Volume 12, No. 2, Year 2008