RT Journal Article SR Electronic T1 Surveillance of work-related musculoskeletal disorders JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 298 OP 299 DO 10.1136/oem.2007.037515 VO 65 IS 5 A1 Fred Gerr YR 2008 UL http://oem.bmj.com/content/65/5/298.abstract AB