Expense is no object: income and physician visits reconsidered.
D000293:Adolescent; D000328:Adult; D000368:Aged; D003695:Delivery of Health Care; D005260:Female; D006801:Humans; D007182:Income; D008297:Male; D008875:Middle Aged; D010820:Physicians; D012017:Referral and Consultation; D012237:Rhode Island