3Susan N.Noeksema,Christopher G.Davis. Thanks for sharing that:Ruminators and their social support network [J]. Journal of personality and social psychology, 1999,77(4) : 801-814
9Holden C. Global survey examities impact of depression[J]. Science, 2000,288(7) :39 -40.
10Jadoon NA, Yaqoob R, Raza A, et al. Anxiety and depression among medical students: a cross - sectional study [ J ]. J Park Med Assoc, 2010,60(8 ) :699 - 702.