TY - RPRT TI - Pyrophosphate arthropathy: a prospective study. AU - M Doherty AU - P Dieppe AU - I Watt PY - 1993 DO - 10.1093/rheumatology/32.3.189 UR - https://pubmed.ncbi.nlm.nih.gov/8448606/ ID - 8448606 ER -