@Article{Ahlmark1977, author = "Ahlmark, Axel", journal = "Scandinavian Journal of Work, Environment & Health", year = "1977", month = "Sep", day = "3", number = "3", pages = "160--160", issn = "0355-3140", url = "https://www.sjweh.fi/show_abstract.php?abstract_id=3011" }