Nozzoli, C., Anastasio, L., Fabbri, L. M., Marino, P., Nardi, R., Sacchetta, A., Mastroianni, F., Mangano, G., Lombardini, F., Zappaterra, A., Valerio, A., Vescovo, G., Agnelli, G., Campanini, M. and of FADOI, for the R. D. (2015) “Complexity of patients with chronic obstructive pulmonary disease hospitalized in internal medicine: a survey by FADOI”, Italian Journal of Medicine, 9(2), pp. 120–124. doi: 10.4081/itjm.2015.516.