[1] Univ Turin, Dept Clin & Biol Sci, Turin, Italy
[2] Ctr Hosp Le Mans, Nephrol, Le Mans, France
[3] Dubai Med Coll, Dept Med, Dubai, U Arab Emirates
[4] Nanjing Univ, Jinling Hosp, Natl Clin Res Ctr Kidney Dis, Sch Med, Nanjing, Jiangsu, Peoples R China
[5] Moscow City Hosp, Nephrol, Moscow, Russia
[6] Moscow State Univ Med & Dent, Nephrol, Moscow, Russia
[7] Russian Med Acad Continuous Profess Educ, Nephrol, Moscow, Russia
[8] Univ British Columbia, Div Nephrol, Dept Med, Vancouver, BC, Canada