@article{Erens2014,
author = {Erens, B. and Burkill, S. and Couper, M.P. and Conrad, F. and Clifton, S. and Tanton, C. and Phelps, A. and Datta, J. and Mercer, C.H. and Sonnenberg, P. and Prah, P. and Mitchell, K.R. and Wellings, K. and Johnson, A.M. and Copas, A.J.},
title= {Nonprobability web surveys to measure sexual behaviors and attitudes in the general population: A comparison with a probability sample interview survey},
year = {2014},
doi = {10.2196/jmir.3382},
volume = {16},
number = {12},
pages = {e276},
}