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Johnson CC, Feingold M, Tilley B.Johnson CC, et al.Int Arch Occup Environ Health. 1990;62(7):513-20. doi: 10.1007/BF00381182.Int Arch Occup Environ Health. 1990.PMID: 2149717
Joseph CL, Ownby DR, Peterson EL, Johnson CC.Joseph CL, et al. Among authors: johnson cc.Chest. 2000 May;117(5):1336-44. doi: 10.1378/chest.117.5.1336.Chest. 2000.PMID: 10807820
Kleerekoper M, Brienza RS, Schultz LR, Johnson CC.Kleerekoper M, et al. Among authors: johnson cc.Arch Intern Med. 1991 Oct;151(10):1971-6.Arch Intern Med. 1991.PMID: 1929685
Nelson DA, Johnson CC, Divine GW, Strauchman C, Joseph CL, Ownby DR.Nelson DA, et al. Among authors: johnson cc.Ann Allergy Asthma Immunol. 1997 Jan;78(1):21-6. doi: 10.1016/S1081-1206(10)63365-0.Ann Allergy Asthma Immunol. 1997.PMID: 9012615
Joseph CL, Havstad SL, Johnson D, Saltzgaber J, Peterson EL, Resnicow K, Ownby DR, Baptist AP, Johnson CC, Strecher VJ.Joseph CL, et al. Among authors: johnson cc, johnson d.J Asthma. 2010 Aug;47(6):667-73. doi: 10.3109/02770900903518827.J Asthma. 2010.PMID: 20642376Free PMC article.Clinical Trial.