1 University of Rosario, Calle 63 D No. 24-31, Bogota, Colombia 2 St. Elizabeth Health Center, Northeast Ohio Universities College of Medicine, 1044 Belmont Avenue, Youngstown, OH 44501-1790. E-mail address: [email protected] 3 Denver Health Medical Center, 777 Bannock Street, MC0188, Denver, CO 80204
