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The Journal of Clinical Pharmacology > 62 > S1 > S53 - S66
Journal of Echocardiography > 2017 > 15 > 1 > 13-17
American Journal of Obstetrics and Gynecology > 2004 > 191 > 3 > 1014-1018
European Journal of Obstetrics and Gynecology > 1999 > 84 > 2 > 187-192