RT Journal Article SR Electronic T1 Effect of orthophosphate and other factors on the crystal growth of calcium pyrophosphate in vitro JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 101 OP 101 DO 10.1136/ard.42.Suppl_1.101 VO 42 IS Suppl 1 A1 P. R. Hearn A1 D. F. Guilland-Cumming A1 R. G. G. Russell YR 1983 UL http://ard.bmj.com/content/42/Suppl_1/101.abstract AB