TY - JOUR A1 - van der Elst, E.M. A1 - Okuku, H.S. A1 - Nakamya, P. A1 - Muhaari, A. A1 - Davies, A. A1 - McClelland, R.S. A1 - Price, M.A. A1 - Smith, A.D. A1 - Graham, S.M. A1 - Sanders, E.J. T1 - Is audio computer-assisted self-interview (ACASI) useful in risk behaviour assessment of female and male sex workers Y1 - 2009 DO - 10.1371/journal.pone.0005340 VL - 4 IS - 5 ER -