00721na  a2200193   4500001001300000005001500013008004100028024002700069035002700096100001400123370004800137372004000185373005800225374005700283377002200340400001800362670011200380670003500492KAC20219816020221013140017210915 b aznnnaabn          fa aaa      7 a00000005052846442isni  a(KISTI)ADPER68002690011 a박상화  c한국(국명)[韓國]0KSH20000101452nlsh  a의학[醫學]0KSH19980180412nlsh  a서울대학교 의학연구원 인구의학연구소  a연구원(연구자)[硏究員]0KSH19980377142nlsh  l한국어l영어1 aPark, Sanghwa  aEffect of first birth interval length on preterm of singleton birth in Korea, (대한주산의학회), 2016  aKISTIuhttps://www.kisti.re.kr