Verbeek J, Martimo K P, Karppinen J, Kuijer P P, Takala E P, Viikari-Juntura E
Finnish Institute of Occupational Health, Cochrane Occupational Safety and Health Review Group, PO Box 310, 70701 Kuopio, Finland.
Occup Environ Med. 2012 Jan;69(1):79-80. doi: 10.1136/oemed-2011-100214. Epub 2011 Aug 17.
