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United States
Minnesota
Massachusetts
Breast Neoplasms
Myocardial Infarction
Colorectal Neoplasms
Cohort Studies
Logistic Models
Medicare
Age Factors
Retrospective Studies
Health Care Quality Indicators
Socioeconomic Factors
Neoplasm Staging
Treatment Outcome
Physician's Practice Patterns
SEER Program
Questionnaires
Health Services Research
Primary Health Care
Co-Publications
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