@article{Tawfik2007,
author = {Tawfik, L. and Watkins, S.C.},
title= {Sex in Geneva, sex in Lilongwe, and sex in Balaka},
year = {2007},
doi = {10.1016/j.socscimed.2006.10.002},
journal = {Social Science and Medicine},
volume = {64},
number = {5},
pages = {1090--1101},
}