title: Survival in pulmonary fibrosis combined with emphysema: likely defined by characteristics of specific patient subpopulations.
abstract: Authors' Reply to letter from Cottin et al.Please see related letter http://www.fibrogenesis.com/content/4/1/16.
authors.affiliation: University of Maryland School of Medicine and Baltimore VA Medical Center, Baltimore, MD, USA. ntodd@medicine.umaryland.edu.
authors.forename: Nevins W
authors.initials: NW
authors.lastname: Todd
authors.forename: Sergei P
authors.initials: SP
authors.lastname: Atamas