PT - JOURNAL ARTICLE AU - Harrington, J M TI - Health effects of shift work and extended hours of work AID - 10.1136/oem.58.1.68 DP - 2001 Jan 01 TA - Occupational and Environmental Medicine PG - 68--72 VI - 58 IP - 1 4099 - http://oem.bmj.com/content/58/1/68.short 4100 - http://oem.bmj.com/content/58/1/68.full SO - Occup Environ Med2001 Jan 01; 58