2 Department of Dermatology, The University of Texas Health Science Center at Houston, Houston, TX, USA.
3 Universidad de los Andes, Bogotá, Colombia.
4 Department of Dermatology, Division of Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. HQDoan@mdanderson.org.
5 Center for Clinical Studies, Houston, TX, USA; Department of Dermatology, The University of Texas Health Science Center at Houston, Houston, TX, USA.