Birth control Fertility, Human Health surveys Maternal health services Maternal and infant welfare Demographic surveys Demographic surveys--Egypt Egypt--Population_-Statistics Fertility, Human--Egypt Health surveys--Egypt Birth control clinics--Utilization--Botswana Birth control--Africa, Sub-Saharan --Statistics Birth control--Botswana Birth control--Indonesia--Statistics Birth control--Nigeria--Statistics Birth control--Research--Developing countries Birth control--Research--Methodology Birth control--Trinidad and Tobago Birth control--Trinidad and Tobago--Statistics Birth control--Uganda Birth control--Yemen--Statistics Birth control--Zimbabwe Breastfeeding--Brazil Child health services Children Children--Diseases--Trinidad and Tobago--Statistics Children--Health and hygiene--Developing countries--Congresses Children--India--Mortality Children--Mexico--Mortality Children--Tanzania--Mortality