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North CS, Smith EM.North CS, et al.Hosp Community Psychiatry. 1992 Oct;43(10):1010-6. doi: 10.1176/ps.43.10.1010.Hosp Community Psychiatry. 1992.PMID: 1398564
North CS, Alpers DH, Helzer JE, Spitznagel EL, Clouse RE.North CS, et al.Ann Intern Med. 1991 Mar 1;114(5):381-6. doi: 10.7326/0003-4819-114-5-381.Ann Intern Med. 1991.PMID: 1992880
Smith EM, North CS, McCool RE, Shea JM.Smith EM, et al. Among authors: north cs.Am J Psychiatry. 1990 Feb;147(2):202-6. doi: 10.1176/ajp.147.2.202.Am J Psychiatry. 1990.PMID: 2301660
Smith EM, North CS, Spitznagel EL.Smith EM, et al. Among authors: north cs.J Clin Psychiatry. 1993 Mar;54(3):82-7.J Clin Psychiatry. 1993.PMID: 8468313