Institution: | (1) Department of Information Science, Institute of Occupational Medicine, Charit?-Universit?tsmedizin Berlin, Free University Berlin and Humboldt-University Berlin, Thielallee 69-73, 14195 Berlin, Germany;(2) Department of Respiratory Medicine, Hanover Medical School, Carl-Neuberg-Stra?e 1, 30625 Hanover, Germany |