1. Division of Pediatric Infectious Disease, Steven and Alexandra Cohen Children's Medical Center of New York, New Hyde Park and Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY 11040, USA
2. Ryan White Center for Pediatric Infectious Disease, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis, IN, USA
3. Department of Pediatric and Adolescent Medicine, Mayo Clinic School of Medicine, Rochester, MN, USA