@misc{indiciae1b93718aab4f, title = {Heroin users in general practice: ascertainment and features.}, author = {R G Neville and J F McKellican and J Foster}, year = {1988}, doi = {10.1136/bmj.296.6624.755}, url = {https://pubmed.ncbi.nlm.nih.gov/3126963/}, note = {Source identifier: 3126963} }