Variability in interpretation of the electrocardiogram in athletes: Another limitation in pre-competitive screening Hélder Dores, José Ferreira Santos, Paulo Dinis, Francisco Moscoso Costa, Lígia Mendes, José Monge, António Freitas, Pedro de Araújo Gonçalves, Nuno Cardim, Miguel Mendes

An abnormal electrocardiogram in a hypothermic man Paulo M. Araújo, Alzira Nunes, Sofia Torres, Carlos X. Resende, Pedro G. Diogo, Manuel Campelo, Maria J. Maciel

Pacemaker electrocardiogram in a patient with Takotsubo syndrome John E. Madias