@article{Fenton2001,
author = {Fenton, K.A. and Johnson, A.M. and McManus, S. and Erens, B.},
title= {Measuring sexual behaviour: Methodological challenges in survey research},
year = {2001},
doi = {10.1136/sti.77.2.84},
journal = {Sexually Transmitted Infections},
volume = {77},
number = {2},
pages = {84--92},
}