TY  - RPRT
TI  - Quit and win smoking cessation contests: how should effectiveness be evaluated?
AU  - S Chapman
AU  - W Smith
AU  - G Mowbray
AU  - C Hugo
AU  - G Egger
PY  - 1993
DO  - 10.1006/pmed.1993.1035
UR  - https://pubmed.ncbi.nlm.nih.gov/8327422/
ID  - 8327422
ER  -