Promotion of Breastfeeding Intervention Trial (PROBIT) - Kramer,MS.; Chalmers,B.; Hodnett,E-D.; Sevkovskaya,Z.; Dzikovich,I.; Shapiro,S.; Collet,JP.; Valnilovich,I.; Mezen,I.; Ducuet,T.; Shishko,G.; Zubovich,V.; et al. (Journal of the American Medical Association, 2001)