8Chagas MHN, Tumas V, Loureiro SR, et al. Validity of a Brazilian version of the Zung self-rating depression scale for screening of de- pression in patients with Parkinson's disease [ J]. Parkinsonism Re- lat Disnrd, 2010, 16(1) :42 -45.
9Passik SD, Kirsh KL, Donaghy KB, et al. An Attempt to Employ the Zung Self-Rating Depression Scale as a "Lab Test" to Trigger Follow-Up in Ambulatory Oncology Clinics: Criterion Validity and Detection [ J]. J Pain Symptom Manage, 2001, (21 ) 4: 273 - 280.