Affiliation: | (1) Academic Renal Unit, Southmead Hospital, Bristol BS10 5NB (United Kingdom), Fax: +44 117 959 5438; e-mail: p.mathieson@bristol.ac.uk, GB;(2) Department of Pathology and Microbiology, University of Bristol, Bristol (United Kingdom), GB;(3) Department of Medicine, University of Hong Kong (Hong Kong) , HK;(4) Department of Biochemistry, University of Bristol, Bristol (United Kingdom), GB |