- Correspondence to Dr Cristiano Carbonelli, Pulmonology Unit, Department of Cardiology, Thoracic and Vascular Surgery and Critical Care Medicine, Azienda Ospedaliera ASMN, Istituto di Ricovero e Cura a Carattere Scientifico, Viale Risorgimento 80, Reggio Emilia 42123, Italy;
- Received 3 April 2013
- Accepted 12 April 2013
- Published online 18 May 2013.
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