early blood loss after-delivery was measured in all prematurely ending singleton pregnancies ( amenorrhea 29-38 wk ) during which the patients had been treated with beta-mimetics ( ritodrine or fenoterol ) for the prevention of premature labor , during a 4 yr study period ( 1975 -- 1978 ) ( n = 129 ) .
C0035661
ritodrine
C0022876
premature