title: A reply to Bertolaccini et al.
authors.affiliation: Tennessee Valley Healthcare System-Veterans Affairs, Department of Thoracic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee Department of Biostatistics, Vanderbilt University, Nashville, Tennessee Tennessee Valley Healthcare System-Veterans Affairs, Department of Thoracic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee.
authors.forename: Stephen A
authors.initials: SA
authors.lastname: Deppen
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Blume
authors.forename: Eric L
authors.initials: EL
authors.lastname: Grogan
mesh_terms: D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis*; D008297:Male; D015233:Models, Statistical