Christian D. Gaytan-Alonso, Department of Radiology and Imaging, Hospital Regional de Alta Especialidad del Bajio, IMSS-Bienestar, Leon, Guanajuato, Mexico;
Roberto T. Jimenez-Lopez, Department of Radiology and Imaging, Hospital de Especialidades Pediatrico de Leon. Secretaria de Salud, Leon, Guanajuato, Mexico;