RT Journal Article SR Electronic T1 Occupational COVID-19: what can be learned from notifications of occupational diseases? JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP oemed-2020-107121 DO 10.1136/oemed-2020-107121 A1 Henk F van der Molen A1 Sanja Kezic A1 Steven Visser A1 Gerda de Groene A1 Jaap Maas A1 Astrid de Wind A1 Sietske Tamminga YR 2020 UL http://oem.bmj.com/content/early/2020/11/06/oemed-2020-107121.abstract AB