1. Dermatology Department, Universidad CES, Medellin, Colombia
2. Dermatology Department, National Institute of Pediatrics, Mexico City, Mexico
3. Americas Health Foundation, San Francisco, CA, USA
4. Americas Health Foundation, Bogota, Colombia
5. Dermatology Department, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
6. Dermatology Section, Facultad de Medicina, Center for Dermatology Investigation CIDERM, Universidad de Antioquia, Medellin, Colombia
7. Hospital Universitario Austral, Buenos Aires, Argentina