00663nas a2200289   4500000000100000008004100001260000900042653001700051653002900068653002200097653001100119653002200130653001100152653001200163653000900175653001200184653003200196653001400228653002400242653001000266100001500276700001200291245003800303300001100341490000700352022001400359       1976                            d  c197610aBirth Weight10aCongenital Abnormalities10aDiseases in Twins10aFemale10aGenetics, Medical10aHumans10aleprosy10aMale10aMethods10aPharmaceutical Preparations10aPregnancy10aPregnancy, Multiple10aTwins1 aPropping P1 aVogel F00aTwin studies in medical genetics.  a249-580 v25  a0001-5660