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Salem YA, Shaldam MA, El-Sherbiny DT, El-Wasseef DR, El-Ashry SM.Salem YA, et al. Among authors: el wasseef dr.J Chromatogr Sci. 2017 Nov 1;55(10):1013-1020. doi: 10.1093/chromsci/bmx067.J Chromatogr Sci. 2017.PMID: 28977479