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Gad El-Hak ASM, Mohammed AAK, Abdel Hakiem AF, Mahfouz RM.Gad El-Hak ASM, et al. Among authors: mahfouz rm.Spectrochim Acta A Mol Biomol Spectrosc. 2019 Nov 5;222:117200. doi: 10.1016/j.saa.2019.117200. Epub 2019 May 30.Spectrochim Acta A Mol Biomol Spectrosc. 2019.PMID: 31176161