00527nas a2200193   4500000000100000000000100001008004100002100001400043700001400057700001500071700001200086700001400098700001500112700001900127245015600146300001000302490000700312022001400319       2015                            d1 aC. Sammon1 aA. Miller1 aK. Mahtani1 aT. Holt1 aN. McHugh1 aR. Luqmani1 aA. Nightingale00aMissing laboratory test data in electronic general practice records: analysis of rheumatoid factor recording in the clinical practice research datalink  a504-90 v24  a1053-8569