[The influence of nipples and pacifiers on breastfeeding duration].
D001903:Bottle Feeding / Q000706:statistics & numerical data*; D001942:Breast Feeding / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D041361:Pacifiers / Q000706:statistics & numerical data*; D012307:Risk Factors; D013997:Time Factors