Data Contradictory on Efficacy of Male Sex Preselection Method
Ob. Gyn. News 1984 January 1-14; 19(1): 9
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Improved Observational Method for Studying Therapeutic efficacy.Suggestive Evidence That Lidocaine Prophylaxis Prevents Death in Acute Myocardial Infarction Horwitz, Ralph I.; Feinstein, Alvan R. (1981-11-27)