Pulmonary thromboendarterectomy in Portugal: Initial experience José Fragata; Helena Telles;

Heart failure units: State of the art in disease management Ana Teresa Timóteo; Tiago Pereira Silva; Rita Ilhão Moreira; António Gonçalves; Rui Soares; Rui Cruz Ferreira;

Chronotropism during exercise. Methodological and conceptual inconsistencies Miguel Mendes;