@misc{indiciae5d70b9304535, title = {Twelve-step and mutual-help programs for addictive disorders.}, author = {J N Chappel and R L DuPont}, year = {1999}, doi = {10.1016/s0193-953x(05)70085-x}, url = {https://pubmed.ncbi.nlm.nih.gov/10385942/}, note = {Source identifier: 10385942} }