TY  - GEN
AU  - Farrell,Albert D
AU  - Henry,David B
AU  - Bettencourt,Amie
TI  - Methodological challenges examining subgroup differences: examples from universal school-based youth violence prevention trials
SN  - 1573-6695
PY  - 2013///0924
KW  - Adolescent
KW  - Family
KW  - Humans
KW  - School Health Services
KW  - organization & administration
KW  - Violence
KW  - prevention & control
N1  - Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S
UR  - https://doi.org/10.1007/s11121-011-0200-2
ER  -