 Dr Dani Ejzenberg wo ku bitaro bya das Clínicas byi São Paulo, yagize ati: Nyababyeyi za mbere zatewe zikuwe mu bantu bakiriho zabaye intambwe ndende itewe mu buvuzi, bituma abagore benshi bingumba bashobora kubyara hifashishijwe abatanga nyababyeyi bakwiye nibikoresho byo mu buvuzi bicyenewe. 