Ellam Timothy, Twohig Helen, Khwaja Arif
Sheffield Kidney Institute, Northern General Hospital, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield S5 7AU, UK Department of Cardiovascular Science, University of Sheffield, Sheffield, UK.
Academic Unit of Primary Medical Care, Northern General Hospital, Sheffield, UK.
BMJ. 2016 Jan 18;352:h6559. doi: 10.1136/bmj.h6559.