Hourly variation in onset of labor and rupture of membranes
作者： Landrum B. Shettles
DOI: 10.1016/0002-9378(60)90382-3
关键词:
摘要: Abstract The frequency distribution curves for spontaneous onset of labor and rupture the membranes before reveal a definite diurnal rhythmicity during each 24 hour period. Patients most often commence preceding hours rest sleep.
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sci-hub.se 参考文章(1)
E. Charles, The hour of birth; a study of the distribution of times of onset of labour and of delivery throughout the 24-hour period. Journal of Epidemiology and Community Health. ,vol. 7, pp. 43- 59 ,(1953) , 10.1136/JECH.7.2.43