Letters
Fifth revision of Declaration of Helsinki
BMJ 2002; 324 doi: https://doi.org/10.1136/bmj.324.7343.975 (Published 20 April 2002) Cite this as: BMJ 2002;324:975
Article usage
Article metrics provide readers and authors with an indication of how often a specific article has been accessed month by month. It counts three formats - abstract/extract, full text and pdf. The page is updated each day.