WYSHAK, G BIRTH HAZARD OF THE SECOND TWIN. [electronic resource] - JAMA Nov 1963 - 869-70 p. digital Publication Type: Journal Article ISSN: 0098-7484 Standard No.: 10.1001/jama.1963.63710090019020c doi Subjects--Topical Terms: Birth OrderFetal DeathHumansInfantInfant MortalityTwins