WALCHER, W; PETRU, E; TSCHERNE, G; TAMUSSINO, K.
CHANGES IN THE OBSTETRICAL RISK OF ADOLESCENT PRIMIPARAS - A COMPARISON BETWEEN 1971-75 AND 1983-87
ADOLESCENT PEDIAT GYNECOL. 1989; 2: 221-223.
Doi: 10.1016/S0932-8610(19)80098-1
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