Frequency and duration of breast-feeding in Switzerland.
Conzelmann-Auer
C
C
Institute for social- and preventive medicine, Basle.
Ackermann-Liebrich
U
U
D001942:Breast Feeding / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D012386:Rooming-in Care; D012923:Social Class; D011795:Surveys and Questionnaires; D013557:Switzerland; D013997:Time Factors