O'Driscoll, K.; Meagher, D.; Boylan, P. (21 March 1996). "A Clinical Trial of Active Management of Labor". New England Journal of Medicine. 334 (12): 797–799. doi:10.1056/NEJM199603213341212. ISSN0028-4793. PMID8592558.
O'Driscoll, K.; Meagher, D.; Boylan, P. (21 March 1996). "A Clinical Trial of Active Management of Labor". New England Journal of Medicine. 334 (12): 797–799. doi:10.1056/NEJM199603213341212. ISSN0028-4793. PMID8592558.
O'Driscoll, K.; Meagher, D.; Boylan, P. (21 March 1996). "A Clinical Trial of Active Management of Labor". New England Journal of Medicine. 334 (12): 797–799. doi:10.1056/NEJM199603213341212. ISSN0028-4793. PMID8592558.