1. Clinical and demographic predictors of exercise capacity in end-stage renal disease
2. Creatinine Measurement: State of the Art in Accuracy and Interlaboratory Harmonization
3. The International Measurement Evaluation Programme. Institute for Reference Materials Measurements, European Commission Joint Research Centre. Trace and Minor Constituents in Human Serum. 2003, European Commission Joint Research Centre. Data obtained from the regional coordinator and analysed by Dr Graham Jones (personal communication)
4. Chemical Pathology QAP Program. General Chemistry and Therapeutic Drugs Program, Cycle 66, End‐of‐Cycle Report. 2004, Raw data obtained from the program and analysed by Michael Peake and John Calleja (personal communication)