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R. C. KESSLER,
G. ANDREWS,
L. J. COLPE,
E. HIRIPI,
D. K. MROCZEK,
S.-L. T. NORMAND,
E. E. WALTERS
and A. M. ZASLAVSKY
(2002).
Short screening scales to monitor population prevalences and trends in non-specific psychological distress. Psychological Medicine,
32
,
pp 959-976
doi:10.1017/S0033291702006074