group a ( n = 30 ) received 1 mg vitamin k ( menadione sodium disulphite ) intramuscularly at birth , group b ( n = 30 ) received 0.5 mg intramuscularly , group c ( n = 30 ) 1 mg orally and group d ( n = 30 ) did not receive any vitamin k .
C0025270
menadione
C0042878
vitamin k