the study revealed a lower lng percentage transfer from maternal sera to breast milk -- 11.8 +/- 2 , 7 +/- 2 and 8 +/- 1 and relatively higher percentage lng transfer from breast milk to infant 's sera -- 75 +/- 17 , 68 +/- 20 and 32 +/- 3 , in lng-iud , norplant ( r ) -2 and minipill users , respectively .
C0023566
lng
C1145675
norplant