@article{b7ff16f6562f444a93554b6b3cb4d8ba,
title = "Risk of ovulation during lactation",
author = "Gray, \{Ronald H.\} and Campbell, \{Oona M.\} and Ruben Apelo and Eslami, \{Susan S.\} and Howard Zacur and Ramos, \{Rebecca M.\} and Gehret, \{Judith C.\} and Labbok, \{Miriam H.\}",
year = "1990",
month = jul,
doi = "10.1097/00006254-199007000-00017",
language = "English (US)",
volume = "45",
pages = "477--478",
journal = "Obstetrical and Gynecological Survey",
issn = "0029-7828",
publisher = "Lippincott Williams and Wilkins",
number = "7",
}