Multiple primary cancers at Memorial Hospital 1949-1962.

  title={Multiple primary cancers at Memorial Hospital 1949-1962.},
  author={J. Willem O. Van Den Berg and David Schottenfeld},
  volume={40 4 Suppl},
The Memorial Hospital, New York, surveys of multiple primary cancer risks undertaken during 1965-1971 are summarized. After re-examination the methodological problems noted were: 1) that prospective studies tell us more than prevalence or retrospective studies; 2) that risks must be related to the observation period, patient's ages, etc.; 3) that hospital series probably are selected but that this may be overcome by internal comparisons; 4) that the search for explanatory variables is difficult… CONTINUE READING

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