@misc{indiciaea8c80690108f, title = {Factors affecting menstrual cycle characteristics.}, author = {Yan Liu and Ellen B Gold and Bill L Lasley and Wesley O Johnson}, year = {2004}, doi = {10.1093/aje/kwh188}, url = {https://pubmed.ncbi.nlm.nih.gov/15234934/}, note = {Source identifier: 15234934} }