1. private practice in Bucaramanga, Colombia
2. Division of Plastic Surgery, Hospital Innovare, Zapopan, Jalisco, México Dr. José “Guerrerosantos,” Zapopan, Jalisco, México
3. private practice in Mérida, Yucatán, México
4. private practice in Puerto Vallarta, Jalisco, México
5. Division of Internal Medicine, Jalisco Institute of Reconstructive Surgery “Dr. José Guerrerosantos,” Zapopan, Jalisco, México
6. Massachusetts Eye and Ear, Brigham and Women’s Hospital; and is an Assistant Professor of Anesthesia, Harvard Medical School, Boston, MA