N Engl J Med. 2003 Oct 9;349(15):1443-50.
Clinical practice. Combination estrogen-progestin oral contraceptives.
Petitti DB.
Research and Evaluation Department, Kaiser Permanente Southern California, Pasadena 91188, USA. diana.b.petitti@kp.org
Erratum in:
- N Engl J Med. 2004 Jan 1;350(1):92.
Comment in:
PMID: 14534338 [PubMed - indexed for MEDLINE]
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