@article{69407abdf7514ecdb539bb37f2714c37,
title = "Tibolone and breast cancer risk: effects of selection bias cannot be eliminated in observational studies",
keywords = "Breast Neoplasms, Cohort Studies, Estrogen Receptor Modulators, Female, Humans, Norpregnenes, Risk Factors, Selection Bias",
author = "A Coomarasamy",
year = "2008",
month = jun,
doi = "10.1111/j.1471-0528.2008.01735.x",
language = "English",
volume = "115",
pages = "919",
journal = "BJOG: An International Journal of Obstetrics & Gynaecology",
issn = "1470-0328",
publisher = "Wiley",
number = "7",
}