Career Focus
Briefing
BMJ 1997; 315 doi: https://doi.org/10.1136/bmj.315.7123.3 (Published 20 December 1997) Cite this as: BMJ 1997;315:S3-7123
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.