Professional courtesy discounts.
D016265:Conflict of Interest / Q000331:legislation & jurisprudence*; D018588:Fee-for-Service Plans / Q000331:legislation & jurisprudence*; D006801:Humans; D007348:Insurance, Health / Q000592:standards; D007484:Iowa; D011216:Practice Management, Medical / Q000191:economics*; D010818:Practice Patterns, Physicians' / Q000331:legislation & jurisprudence*