550,846 PARKKOLA RIITTA MRI of the lumbar discs and paraspinal muscles a study of patients with low back pain and healthy controls : [thesis] / by Riitta Parkkola ; from the Department of Diagnostic Radiology, University of Turku. - Turku : [Turun Yliopisto], 1993. - 75, 34 s. wiele liczb. : il. : 25 cm (Annales Universitatis Turkuensis. Ser. D. Medica-Odontologica, ISSN 0355-9483 ;122) ISBN 951-880-991-7