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Citation: La. Aaron et al., Comorbid clinical conditions in chronic fatigue - A co-twin control study, J GEN INT M, 16(1), 2001, pp. 24-31

Authors: Buchwald, D Herrell, R Ashton, S Belcourt, M Schmaling, K Sullivan, P Neale, M Goldberg, J

Citation: D. Buchwald et al., A twin study of chronic fatigue, PSYCHOS MED, 63(6), 2001, pp. 936-943

Authors: Afari, N Schmaling, KB Herrell, R Hartman, S Goldberg, J Buchwald, DS

Citation: N. Afari et al., Coping strategics in twins with chronic fatigue and chronic fatigue syndrome, J PSYCHOSOM, 48(6), 2000, pp. 547-554

Authors: Poole, J Herrell, R Ashton, S Goldberg, J Buchwald, D

Citation: J. Poole et al., Results of isoproterenol tilt table testing in monozygotic twins discordant for chronic fatigue syndrome, ARCH IN MED, 160(22), 2000, pp. 3461-3468

Authors: Herrell, R Goldberg, J True, WR Ramakrishnan, V Lyons, M Eisen, S Tsuang, MT

Citation: R. Herrell et al., Sexual orientation and suicidality - A co-twin control study in adult men, ARCH G PSYC, 56(10), 1999, pp. 867-874