PT - JOURNAL ARTICLE AU - Neil Pearce TI - Registration of protocols for observational research is unnecessary and would do more harm than good AID - 10.1136/oem.2010.058917 DP - 2011 Feb 01 TA - Occupational and Environmental Medicine PG - 86--88 VI - 68 IP - 2 4099 - http://oem.bmj.com/content/68/2/86.short 4100 - http://oem.bmj.com/content/68/2/86.full SO - Occup Environ Med2011 Feb 01; 68