TY - GEN AU - Schermelleh-Engel,K TI - [Validity of the Hoppe List. An empirical study of patients with backache] SN - 0723-6557 PY - 1989///0816 KW - Back Pain KW - psychology KW - Humans KW - Pain Measurement KW - methods KW - Psychophysiologic Disorders KW - Rheumatic Diseases KW - Sick Role N1 - Publication Type: English Abstract; Journal Article ER -