[1] Italian Agcy Dev Cooperat, Khartoum, Sudan
[2] Shenzhen Univ, Coll Math & Stat, Shenzhen 518060, Peoples R China
[3] Alberta Hlth Serv, Dept Canc Epidemiol & Prevent Res, Calgary, AB T2S 3C3, Canada
[4] Univ Calgary, Dept Oncol & Community Hlth Sci, Calgary, AB T2N 1N4, Canada
[5] Azienda USL Toscana Sud Est, Primary Care Dept, Grosseto, Italy
[6] Anglia Ruksin Univ, Sch Psychol & Sport Sci, Cambridge, England
[7] Univ Padua, Dept Med, Unit Androl & Reprod Med, Padua, Italy
[8] AULSS Azienda Unita Locale Socio Sani 3 Serenissi, Unit Nephrol & Dialysis, I-30031 Dolo, Mirano, Italy
[9] Med Univ Vienna, Ctr Publ Hlth, Dept Social & Prevent Med, Vienna, Austria
[10] Bezmialem Vakif Univ, Fac Med, Dept Geriatr Med, Istanbul, Turkey
[11] Bezmialem Vakif Univ, Fac Med, Dept Nephrol, Istanbul, Turkey
[12] Univ Palermo, Dept Internal Med & Geriatr, Geriatr Unit, Palermo, Italy
[13] Anglia Ruskin Univ, Cambridge Ctr Sport & Exercise Sci, Cambridge, England