Dr. Fernando Petersen: He has been a professor of Cardiology at the University of Guadalajara. He is a member of the Jalisco Society of Cardiology, the Mexican Society of Cardiology, the Society of Interns and Fellows of the National Institute of Cardiology and the American College of Physicians, American College of Cardiology, among others. His articles have been published in various cardiology journals in Mexico and the world such as the Texas Heart Journal and the Cath and Cardiovascular Diagnosis, and various projects for other institutions such as the University Press of the University of Guadalajara and the Elsevier Publishing House.