The influence of social security systems on psychosomatic difficulties.
D000328:Adult; D001416:Back Pain / Q000523:psychology; D003093:Colitis, Ulcerative / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009042:Motivation; D011602:Psychophysiologic Disorders / Q000523:psychology*; D012943:Social Security