Pediatric Blood & Cancer, 66(6):27698. Wiley Pediatric Blood and Cancer, 66(6):e27698. Wiley-Liss Inc. Pediatric blood & cancer, 66(6):e27698. Wiley-Liss Inc. Pediatric Blood and Cancer, 66(6). Wiley-Liss Inc. Pediatric blood & cancer, 66(6):27698. Wiley Loeffen, E A H, Kremer, L C M, van de Wetering, M D, Mulder, R L, Font-Gonzalez, A, Dupuis, L L, Campbell, F, Tissing, W J E, on behalf of the Pain in Children with Cancer Guideline Development Panel, Anghelescu, D L, Birnie, K, de Bont, J, Bredlau, A-L, Cullen, P, Daniels, S, Dick, B, van Dijk, M, Dingeman, R S, Evan, E, Gegg, J, Gibson, F, van Grotel, M, Jibb, L, Kao, R, Knops, R, Kulkarni, K, Leroy, P, Liossi, C, Ljungman, G, McLean, J, Mensink, M, Michiels, E, Muckaden, M A, Newman, B, Positano, K, Rijsdijk, M, Rowe, E, Sangha, G, Stinson, J, Taddio, A, Taylor, H, Tutelman, P, Twycross, A, Wijnen, M & Zeltzer, L 2019, ' Reducing pain in children with cancer: Methodology for the development of a clinical practice guideline ', Pediatric Blood and Cancer, vol. 66, no. 6, e27698 . https://doi.org/10.1002/pbc.27698 Pediatric Blood & Cancer, 66(6):e27698. Wiley-Liss Inc.