Correspondence to Dr Pedro M Machado, Centre for Rheumatology and MRC Centre for Neuromuscular Diseases, University College London, London WC1B 5EH, UK; p.machado{at}ucl.ac.uk Contributors PMM drafted ...

Encompassing a five-level hierarchical classification codeset, UNSPSC enables expenditure analysis at grouping levels relevant to your needs. You can drill down or up ...