Crosby, W M Twin pregnancy: an appraisal of management options. [electronic resource] - The Journal of the Oklahoma State Medical Association Oct 1989 - 516-27 p. digital Publication Type: Journal Article ISSN: 0030-1876 Subjects--Topical Terms: Delivery, Obstetric--methodsHumansInfant MortalityInfant, Low Birth WeightInfant, NewbornMorbidityRetrospective StudiesTwins--statistics & numerical data