TY  - JOUR
A1  - Langhaug, L.F.
A1  - Sherr, L.
A1  - Cowan, F.M.
T1  - How to improve the validity of sexual behaviour reporting: Systematic review of questionnaire delivery modes in developing countries
Y1  - 2010
DO  - 10.1111/j.1365-3156.2009.02464.x
VL  - 15
IS  - 3

ER  -