Prognostic value of a new cardiopulmonary exercise testing parameter in chronic heart failure: oxygen uptake efficiency at peak exercise — comparison with oxygen uptake efficiency slope Alexandra Toste, Rui Soares, Joana Feliciano, Valeska Andreozzi, Sofia Silva, Ana Abreu, Ruben Ramos, Ninel Santos, Lurdes Ferreira, Rui Cruz Ferreira

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Discrepancy between stress electrocardiographic changes and nuclear myocardial perfusion defects in the prognostic assessment of patients with chest pain Sergio Raposeiras-Roubin, Miguel Garrido-Pumar, Virginia Pubul-Nuñez, Carlos Peña-Gil, Sonia Argibay-Vázquez, Rosa María Agra-Bermejo, Emad Abu-Assi, Amparo Martínez-Monzonís, Marino Vega, Alvaro Ruibal-Morell, Jose Ramón González-Juanatey