“…Then, according to the procedure of Dos Reis et al, we used an electronically scanned version of the body diagram and open-source software to calculate the total body area in each pain diagram (F. J. Dos Reis, de Barros E Silva, de Lucena, Mendes Cardoso, & Nogueira, 2016). Based on the literature, we decided to calculate the percentage pain surface area (PPSA) and count the number of pain sites in order to evaluate widespread pain (WP) (Dragioti, Larsson, Bernfort, Levin, & Gerdle, 2017;Hägg et al, 2003;Persson, Garametsos, & Pedersen, 2011;Visser, Ramachenderan, Davies, & Parsons, 2014). A previous study of patients with chronic pain (Muñoz-García et al, 2016) had shown that both PPSA and WP measures were helpful when assessing pain behavior.…”