TY  - JOUR
A1  - De Graaf, H.
A1  - Vanwesenbeeck, I.
A1  - Meijer, S.
A1  - Woertman, L.
A1  - Meeus, W.
T1  - Sexual trajectories during adolescence: Relation to demographic characteristics and sexual risk
Y1  - 2009
DO  - 10.1007/s10508-007-9281-1
VL  - 38

ER  -