Sean T O'Leary1, Amy B Middleman2, Pamela G Rockwell3. 1. Department of Pediatrics, University of Colorado (ST O'Leary), Aurora, Colo. Electronic address: sean.oleary@cuanschutz.edu. 2. Department of Pediatrics, University of Oklahoma Health Sciences Center (AB Middleman), Oklahoma City, Okla. 3. Department of Family Medicine, University of Michigan Medical School (PG Rockwell), Ann Arbor, Mich.