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Reproducibility of oral contraceptive histories and validity of hormone composition reported in a cohort of US women |
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| Authors: | David J Hunter JoAnn E Manson Graham A Colditz Lisa Chasan-Taber Lisa Troy Meir J Stampfer Frank E Speizer Walter C Willett |
| Institution: | * Department of Epidemiology, Harvard School of Public Health, Boston, MA, USA ? Channing Laboratory, Department of Medicine, Harvard Medical School, Boston, MA, USA c Brigham and Women's Hospital, Boston, MA, USA ? Department of Nutrition, Harvard School of Public Health, Boston, MA, USA § Division of Preventive Medicine, Department of Medicine, Harvard Medical School, Boston, MA, USA b Brigham and Women's Hospital, Boston, MA, USA |
| Abstract: | |
| Keywords: | epidemiologic methods oral contraceptives cohort studies |
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