Low platelet count at admission has an adverse impact on outcome in patients with acute coronary syndromes: from the START Antiplatelet registry oleh Paolo Gresele, Giuseppe Guglielmini, Maurizio Del Pinto, Paolo Calabrò, Pasquale Pignatelli, Giuseppe Patti, Vittorio Pengo, Emilia Antonucci, Plinio Cirillo, Tiziana Fierro, Gualtiero Palareti, Rossella Marcucci, START Antiplatelet Registry Group