“…The majority of studies (60%) were conducted in Asia (Manjula Devi et al, 2014, Prajapati and Ganguly, 2013, Saleem and Masood, 2016, Saleem et al, 2017, Shalini et al, 2013, Sharif-Askari et al, 2014, Sheen et al, 2007, Sweileh et al, 2007, Shigematsu et al, 2017, Taner et al, 2018, Yang et al, 2016, Won et al, 2018, followed by Europe (25%) (Holm et al, 2015, Markota et al, 2009, Nielsen et al, 2013, O'Shaughnessy et al, 2017, Gomez-Lobon et al, 2012, Africa (10%) (Getachew et al, 2015, Garedow et al, 2019 and one in North America (5%) (Juarez-Cedillo et al, 2016). Most (n = 17) of the studies were carried out in different hospital departments while three were conducted in nephrology units only (Saleem and Masood, 2016, Saleem et al, 2017, Sharif-Askari et al, 2014.…”