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Meng H, King-Kallimanis BL, Gum A, Wamsley B.Meng H, et al.Qual Life Res. 2013 Nov;22(9):2359-69. doi: 10.1007/s11136-013-0373-1. Epub 2013 Mar 6.Qual Life Res. 2013.PMID: 23463018