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El-Sherif A, El-Sherif S, Taylor AH, Ayakannu T.El-Sherif A, et al. Among authors: el sherif s.Nutr Cancer. 2021;73(7):1092-1107. doi: 10.1080/01635581.2020.1792948. Epub 2020 Jul 16.Nutr Cancer. 2021.PMID: 32674720Review.