“…Of the 25 articles selected 5 were from the USA (Vaidyanathan et al, 1991 ; Chang et al, 2003 ; Oshida et al, 2003 ; Pozhitkov et al, 2015 ; Sridhar et al, 2016 ), 3 each were from Japan (Fukushima et al, 2014 ; Kameda et al, 2014 , 2019 ), Portugal (Souza et al, 2010 ; Proença et al, 2015 ; Figueiredo-Pina et al, 2019 ), France (Laurent et al, 2001 ; Mabilleau et al, 2006 ; Jorand et al, 2015 ), Poland (Mystkowska, 2016 ; Cwalina et al, 2017 ; Mystkowska et al, 2017 ), 2 each from Brazil (Heggendorn et al, 2015 ; Zavanelli et al, 2015 ) and China (Zhang et al, 2013 ; Lu et al, 2017 ), 1 each from Croatia (Pavlic et al, 2019 ), Spain (DĂaz et al, 2018 ), Italy (Lucchetti et al, 2015 ), and India (Maruthamuthu et al, 2005 ).…”