PubMed · 1996 · 207 citations · 18 references
These results support the concept that the efficiency of human reproduction is maximum at approximately 30% per cycle. A very significant number of these pregnancies end in spontaneous abortion. In addition, pregnancy loss before missed menses occurs in a significant proportion of women.
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Incidence of Early Loss of Pregnancy
Allen J. Wilcox, Clarice R. Weinberg, John F. O’Connor et al. · New England Journal of Medicine · 1988 · 2.3K citations
Female Fecundity as a Function of Age
New England Journal of Medicine · 1982 · 636 citations
Early embryonic mortality in women
D.K. Edmonds, K.S. Lindsay, John F. Miller et al. · Fertility and Sterility · 1982 · 512 citations
John F. Miller, Elizabeth Williamson, J. Glue et al. · The Lancet · 1980 · 500 citations