Book ReviewsRenal and Metabolic Disorders Edited by John A Kellum, Jorge Cerda Oxford University Press 2013 Price £40.00. Pages 222 ISBN 978 0 19 975160 0150 ECG Problems (4th edn) John Hampton Churchill Livingstone Elsevier 2013 Price £27.99. Pp 328 ISBN 978 0 7020 4645 2Transcutaneous Electrical Nerve Stimulation: research to support clinical practice Mark I Johnson Oxford University Press 2014 Price £34.99. Pp 272 ISBN 978 0 19 967327 8