[1] Univ Nacl Autonoma Mexico, Hosp Gen Morelia Dr Miguel Silva, Fac Med, Serv Med Interna,Dept Cardiol,Fac Med, Mexico City, Mexico
[2] Univ Michoacana, Hosp Gen Morelia Dr Miguel Silva, Fac Ciencias Med & Biol Dr Ignacio Chavez, Dept Cardiol, Morelia, Mexico
[3] Hosp Gen Morelia Dr Miguel Silva, Dept Cardiol, Serv Imagen Cardiovasc, Morelia, Michoacan, Mexico