title: Mortality in twins in relation to smoking habits and alcohol problems.
mesh_terms: D000059:Accidents; D000328:Adult; D000367:Age Factors; D000368:Aged; D000437:Alcoholism / Q000150:complications* / Q000453:epidemiology; D003327:Coronary Disease / Q000401:mortality; D003371:Cough / Q000453:epidemiology / Q000209:etiology; D004200:Diseases in Twins; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000401:mortality; D008297:Male; D008875:Middle Aged; D009026:Mortality; D012042:Registries; D012737:Sex Factors; D012907:Smoking / Q000150:complications* / Q000453:epidemiology; D013405:Suicide / Q000453:epidemiology; D013548:Sweden