Anderson JS, Ferrans CE (junho de 1997). «The quality of life of persons with chronic fatigue syndrome.». J Nerv Ment Dis. 185 (6): 359–67. PMID9205421. doi:10.1097/00005053-199706000-00001
Anderson JS, Ferrans CE (junho de 1997). «The quality of life of persons with chronic fatigue syndrome.». J Nerv Ment Dis. 185 (6): 359–67. PMID9205421. doi:10.1097/00005053-199706000-00001