Enlaces

http://www.ecosiac.org/index.php                              Ecosiac

http://www.medicinainternaelsalvador.com/        Medicina Interna de El Salvador

http://www.world-heart-federation.org/                  World Heart Federation

http://www.heart.org/HEARTORG/                            American Heart

http://www.escardio.org/Pages/index.aspx           Asociacion Europea de Cardiologia