Reliability of the exercise-induced ST-segment changes to detect restenosis three months after coronary angioplasty: significance of the appearance in other leads - Michaelides, Andreas P; Dilaveris, Polychronis E; Psomadaki, Zoi D; Aggelakas, Stefanos; Stefanadis, Christodoulos; Cokkinos, Dennis; Gialafos, John; Toutouzas, Pavlos K (American heart journal, 1998)