TY  - RPRT
TI  - Letter: Self-help groups in the smoking problem.
AU  - D Illingworth
AU  - J Pepper
PY  - 1976
DO  - 10.1136/bmj.1.6018.1147-b
UR  - https://pubmed.ncbi.nlm.nih.gov/1268599/
ID  - 1268599
ER  -