We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleTime of day variation in rates of obstetric intervention to assist in vaginal deliveryAuthorsWebb, D APublicationJournal of Epidemiology & Community Health, 2002, Vol 56, Issue 8, p577ISSN0143-005xPublication typearticleDOI10.1136/jech.56.8.577