Reniers G, Armbruster B, Lucas A. Sexual networks, partnership mixing, and the female-to-male ratio of HIV infections in generalized epidemics: an agent-based simulation study. Demogr Res. 2015 Sep;33(15):425-50. doi: 10.4054/DemRes.2015.33.15
Lawson DH, Jick H, Rothman KJ. Coffee and tea consumption and breast disease. Surgery. 1981 Jan 1;90(5):801-3.