Maselli Diego J, Anzueto Antonio
South Texas Veterans Health Care System, Audie L, Murphy Division; Department of Medicine, Division Pulmonary/Critical Care Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA.
Multidiscip Respir Med. 2012 Jun 19;7(1):7. doi: 10.1186/2049-6958-7-7.