Ploughing back the profits.
D000328:Adult; D002648:Child; D002675:Child, Preschool; D005193:Family Planning Services; D005194:Family Practice; D005260:Female; D006123:Group Practice / Q000191:economics / Q000458:organization & administration*; D006801:Humans; D007182:Income; D007223:Infant; D009722:Nurse Practitioners