Comment in

• The etiologic agent of sarcoidosis: what if there isn't one?

  Judson MA. Judson MA. Chest. 2003 Jul;124(1):6-8. doi: 10.1378/chest.124.1.6. Chest. 2003. PMID: 12853492 No abstract available.
• Treatment of pulmonary arterial hypertension: a step forward.

  Sharma S. Sharma S. Chest. 2003 Jul;124(1):8-11. doi: 10.1378/chest.124.1.8. Chest. 2003. PMID: 12853493 No abstract available.
• Sarcoidosis cycle.

  Skillrud DM. Skillrud DM. Chest. 2004 Mar;125(3):1171-2; author reply 1172-3. doi: 10.1378/chest.125.3.1171. Chest. 2004. PMID: 15006991 No abstract available.
• Sarcoidosis cycle.

  Baum GL. Baum GL. Chest. 2004 Mar;125(3):1172; author reply 1172-3. doi: 10.1016/s0012-3692(15)31974-7. Chest. 2004. PMID: 15006992 No abstract available.