The natural history of the normal first stage of labor.
Zhang
Jun
J
From the Division of Epidemiology, Statistics and Prevention Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland; the Department of Clinical Epidemiology, Bremen Institute for Prevention Research and Social Medicine, Bremen University, Bremen, Germany; and the Department of Obstetrics and Gynecology, University of Montreal, Montreal, Quebec, Canada.
Troendle
James
J
Mikolajczyk
Rafael
R
Sundaram
Rajeshwari
R
Beaver
Julie
J
Fraser
William
W
D000328:Adult; D005260:Female; D006801:Humans; D007747:Labor Stage, First / Q000502:physiology*; D010298:Parity; D011247:Pregnancy; D012016:Reference Values; D055815:Young Adult