Abstract
THE cigarette-smoking patterns of physicians have been of interest for several reasons during the past 20 years. Physicians may be assumed to be relatively reliable historians, so that they constitute a good population for studies of the relation of smoking to disease. Also, since most physicians have contact with diseases associated with cigarette smoking, changes in their smoking habits serve as indicators of the extent to which they consider these associations to be of causal importance. One of the first groups of physicians to be questioned about its smoking habits was the Massachusetts Medical Society. This group was first questioned . . .

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