CONTENTS — volume 19, no 6, 1993

Original article

369
Cytogenetics and occupational exposures in acute nonlymphocytic leukemia and myelodysplastic syndrome. Working Group on the Epidemiology of Hematolymphopoietic Malignancies in Italy.
Rodella S, Ciccone G, Rege-Cambrin G, Vineis P
375
Chromosome aberrations in chloralkali workers previously exposed to mercury vapor.
Hansteen IL, Ellingsen DG, Clausen KO, Kjuus H
382
Cancer among farmers in central Italy.
Forastiere F, Quercia A, Miceli M, Settimi L, Terenzoni B, Rapiti E, Faustini A, Borgia P, Cavariani F, Perucci CA
390
Classification system for work in occupational health services.
Wannag A
394
Work content of Norwegian occupational physicians.
Wannag A, Nord E
399
Multiple sclerosis and exposure to solvents, ionizing radiation and animals.
Landtblom AM, Flodin U, Karlsson M, Palhagen S, Axelson O, Soderfeldt B
405
Minor effects of low exposure to inorganic mercury on the human immune system.
Langworth S, Elinder CG, Sundqvist KG
414
Effect of bright light on tolerance to night work.
Costa G, Ghirlanda G, Minors DS, Waterhouse JM
421
Microbial growth on respirator filters from improper storage.
Pasanen AL, Keinanen J, Kalliokoski P, Martikainen PI, Ruuskanen J
426
Mortality update of cellulose fiber production workers.
Lanes SF, Rothman KJ, Dreyer NA, Soden KJ
429
Fatal cadmium-induced pneumonitis.
Seidal K, Jorgensen N, Elinder CG, Sjogren B, Vahter M

Letter to the Editor

432
Re: "Urinary styrene in the biological monitoring of styrene exposure" by F Gobba, C Galassi, S Ghittori, M Imbriani, F Pugliese, A Cavaleri. Scand J Work Environ Health 1993; 19:175-82.
Aitio A