Techniques and material used in the percutaneous treatment of chronic coronary occlusions. Data from the CIBELES study oleh Raul Moreno, Eulogio García, Rui Teles, Jose-Ramon Rumoroso, Henrique Cyrne Carvalho, Francisco Javier Goicolea, José Moreu, Fina Mauri, Manel Sabaté, Vicente Mainar, Lino Patricio, Mariano Valdés, Carlos Cuellas, Manuel Almeida, Angel Sánchez-Recalde, Guillermo Galeote, Santiago Jimenez-Valero, Luis Calvo, Ignacio Plaza, Jose-Luis Lopez-Sendón, Jose-Luis R. Martín