1. From the Department of Surgery (AUS and DHT) and the College of Pharmacy (CM), University of Michigan, Ann Arbor, MI; the CS Mott Children's Hospital (AUS, DK, and DHT), the University of Michigan Health System Financial Planning (DH), and HomeMed Service (DK and MM-B), Ann Arbor, MI; and the University of Michigan Visiting Nurse Corporation, Ann Arbor, MI (JC)