@misc{indiciae4068114f6428, title = {Occupational risks associated with cigarette smoking: a prospective study.}, author = {J Ryan and C Zwerling and E J Orav}, year = {1992}, doi = {10.2105/ajph.82.1.29}, url = {https://pubmed.ncbi.nlm.nih.gov/1536330/}, note = {Source identifier: 1536330} }