1. Department of Pediatrics, Scott & White Clinic and Memorial Hospital, Scott, Sherwood and Brindley Foundation, Texas A&M University Health Science Center, College of Medicine, Temple, Texas
2. Department of Biostatistics, Scott & White Clinic and Memorial Hospital, Scott, Sherwood and Brindley Foundation, Texas A&M University Health Science Center, College of Medicine, Temple, Texas
3. Department of Otolaryngology, Scott & White Clinic and Memorial Hospital, Scott, Sherwood and Brindley Foundation, Texas A&M University Health Science Center, College of Medicine, Temple, Texas