[1] Univ Hosp Lausanne CHUV, Nephrol, Lausanne, Switzerland
[2] Univ Hosp Gdansk, Radiol, Gdansk, Poland
[3] Univ Hosp Lausanne CHUV, Radiol, Lausanne, Switzerland
[4] Univ Bern, Univ Hosp Bern, Dept Nephrol Hypertens & Clin Pharmacol, Inselspital,Dept Clin Res, Bern, Switzerland