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Zhang YP, Zhao XS, Zhang B, Zhang LL, Ni CP, Hao N, Shi CB, Porr C.Zhang YP, et al. Among authors: porr c.Qual Life Res. 2015 Jul;24(7):1607-14. doi: 10.1007/s11136-014-0891-5. Epub 2015 Feb 22.Qual Life Res. 2015.PMID: 25702265
Zhang YP, Liu WH, Yan YT, Porr C, Zhang Y, Wei HH.Zhang YP, et al. Among authors: porr c.Eval Health Prof. 2019 Sep;42(3):328-343. doi: 10.1177/0163278718801439. Epub 2018 Oct 9.Eval Health Prof. 2019.PMID: 30301376
Younas A, Porr C.Younas A, et al. Among authors: porr c.Nurse Res. 2018 Dec 6;26(3):14-19. doi: 10.7748/nr.2018.e1585. Epub 2018 Oct 31.Nurse Res. 2018.PMID: 30456936Review.