Comment on

• A preliminary study of long-term treatment with interferon gamma-1b and low-dose prednisolone in patients with idiopathic pulmonary fibrosis.

  Ziesche R, Hofbauer E, Wittmann K, Petkov V, Block LH. Ziesche R, et al. N Engl J Med. 1999 Oct 21;341(17):1264-9. doi: 10.1056/NEJM199910213411703. N Engl J Med. 1999. PMID: 10528036 Clinical Trial.
• A placebo-controlled trial of interferon gamma-1b in patients with idiopathic pulmonary fibrosis.

  Raghu G, Brown KK, Bradford WZ, Starko K, Noble PW, Schwartz DA, King TE Jr; Idiopathic Pulmonary Fibrosis Study Group. Raghu G, et al. N Engl J Med. 2004 Jan 8;350(2):125-33. doi: 10.1056/NEJMoa030511. N Engl J Med. 2004. PMID: 14711911 Clinical Trial.