Familial pulmonary fibrosis is the strongest risk factor for idiopathic pulmonary fibrosis.
Respir Med. 2011 Dec 1;105(12):1902-7.
Res Rep Health Eff Inst. 2009 Mar 1(139):5-71; discussion 73-89.
Idiopathic pulmonary fibrosis.
Orphanet J Rare Dis. 2008 Jan 1;3:8.