1. Department of Dermatology; School of Medicine; University of Maryland; Baltimore ML USA
2. Department of Dermatology; School of Medicine; Emory University; Atlanta GA USA
3. Division of General Pediatrics; Boston Children's Hospital; Boston MA USA
4. RAND Corporation; Santa Monica CA USA
5. Epidemiology and Applied Research Branch; Division of Cancer Prevention and Control; Centers for Disease Control and Prevention; Atlanta GA USA
6. Department of Pediatrics; School of Medicine; Harvard University; Boston MA USA
7. Department of Psychology; University of Alabama at Birmingham; Birmingham AL USA
8. Center for Health Promotion and Prevention Research; School of Public Health; University of Texas Health Science Center; Houston TX USA
9. School of Medicine; Kaiser Permanente; Pasadena CA USA
10. Division of Dermatology; Atlanta Veterans Affairs Medical Center; Atlanta GA USA