TY  - RPRT
TI  - Challenges and changes.
AU  - J Wardrope
AU  - P Driscoll
PY  - 2002
DO  - 10.1136/emj.19.5.381
UR  - https://pubmed.ncbi.nlm.nih.gov/12204979/
ID  - 12204979
ER  -