DOI:
10.1055/s-00030576
Revista Brasileira de Ginecologia e Obstetrícia / RBGO Gynecology and Obstetrics
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References
Gray RH, Simpson JL, Bitto AC. , et al.
Sex ratio associated with timing of insemination and length of the follicular phase in planned and unplanned pregnancies during use of natural family planning.
Hum Reprod 1998;
13 (05) 1397-1400 . Doi: 10.1093/humrep/13.5.1397
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