TY  - JOUR
A1  - Sosa, R.
A1  - Kennell, J.
A1  - Klaus, M.
A1  - Robertson, S.
A1  - Urrutia, J.
T1  - The effect of a supportive companion on perinatal problems, length of labor, and mother-infant interactions
Y1  - 1980
DO  - 10.1056/NEJM198009113031101
JF  - The New England Journal of Medicine
VL  - 303
IS  - 11

ER  -