DOI:  10.1111/j.1601-5215.2007.00217.x  The validity of the 21-item version of the Depression Anxiety Stress Scales as a routine clinical outcome measure
Author: Ng, Felicity.  v. 19  no. 5, pp. 304- 310  Date: 2014
ISSN:  0924-2708  EISSN:  1601-5215 
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