The danger of overmatching in studies of the perinatal mortality and birthweight of infants born after assisted conception

European Journal of Obstetrics & Gynecology and Reproductive Biology - Tập 69 - Trang 73-75 - 1996
Mika Gissler1,2, Elina Hemminki1
1STAKES, National Research and Development Centre for Welfare and Health, P.O. Box 220, 00531 Helsinki, Finland
2University of Helsinki, Department of Public Health, P.O. Box 21, 00014 University of Helsinki, Helsinki, Finland

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European Journal of Obstetrics & Gynecology and Reproductive Biology

Tập 69

73-75

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