Breastfeeding Coalition of San Joaquin County,
http://internationalbreastfeedingjournal.biomedcentral.com/articles/10.1186/s13006-015-0057-2
http://internationalbreastfeedingjournal.biomedcentral.com/articles/10.1186/s13006-015-0057-2
Higher breastfeeding performance index is associated with lower risk of illness in infants under six months in Ethiopia.