The problem of infant mortality prior to 1800.
D005060:Europe; D005260:Female; D049668:History, 15th Century; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D006801:Humans; D007224:Infant Care / Q000266:history*; D007226:Infant Mortality; D007231:Infant, Newborn; D008427:Maternal Health Services / Q000266:history*; D008428:Maternal Mortality; D008880:Midwifery / Q000266:history; D011247:Pregnancy