How you ask really matters: randomised comparison of four sexual behaviour questionnaire delivery modes in Zimbabwean youth.
Langhaug
Lisa F
LF
University College London, London, UK. lisa.langhaug@gmail.com
Cheung
Yin Bun
YB
Pascoe
Sophie J S
SJ
Chirawu
Petronella
P
Woelk
Godfrey
G
Hayes
Richard J
RJ
Cowan
Frances M
FM