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Levine JF, Apperson CS, Spiegel RA, Nicholson WL, Staes CJ.Levine JF, et al. Among authors: apperson cs.South Med J. 1991 Jan;84(1):27-31. doi: 10.1097/00007611-199101000-00008.South Med J. 1991.PMID: 1986423
Levin M, Levine JF, Apperson CS, Norris DE, Howard PB.Levin M, et al. Among authors: apperson cs.J Med Entomol. 1995 Mar;32(2):138-42. doi: 10.1093/jmedent/32.2.138.J Med Entomol. 1995.PMID: 7608919
Levin M, Levine JF, Yang S, Howard P, Apperson CS.Levin M, et al. Among authors: apperson cs.Am J Trop Med Hyg. 1996 Jan;54(1):92-7. doi: 10.4269/ajtmh.1996.54.92.Am J Trop Med Hyg. 1996.PMID: 8651379
Norris DE, Levine JF, Menard M, Nakagaki K, Howard P, Apperson CS.Norris DE, et al. Among authors: apperson cs.J Wildl Dis. 1996 Apr;32(2):300-14. doi: 10.7589/0090-3558-32.2.300.J Wildl Dis. 1996.PMID: 8722269