@article {531, editor = {,}, title = {International Digest}, volume = {47}, number = {421}, pages = {531--532}, year = {1997}, publisher = {Royal College of General Practitioners}, issn = {0960-1643}, URL = {https://bjgp.org/content/47/421/531}, eprint = {https://bjgp.org/content/47/421/531.full.pdf}, journal = {British Journal of General Practice} }