1. Department of Dermatology, National Institute of Pediatrics, Mexico City, Mexico
2. Division of Dermatology, Seattle Children’s Hospital, Seattle, Washington
3. Division of Dermatology, Department of Pediatrics, University of Washington, Seattle
4. Division of Dermatology, Department of Pediatrics, Hospital for Sick Children, Toronto, Ontario, Canada
5. Department of Research Methodology, National Institute of Pediatrics, Mexico City, Mexico
6. Division of Pediatric Dermatology, Department of Dermatology, Medical College of Wisconsin, Milwaukee
7. Department of Pediatrics, Medical College of Wisconsin, Milwaukee