546,725 ÖSTLIN PIROSKA Occupational career and health : methodological considerations on fche healthy worker effect : [doctoral thesis] / Piroska Ostlin ; Uppsala University. -Uppsala : Academiae Upsaliensis, 1989. - 55 s. ; 24 cm (Acta Universitatis Upsaliensis Comprehensive Summaries of Uppsala Dissertations from the Faculty of Medicine ISSN 0282-7476 ; No 224) ISBN 91-554-2452-X