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Rizk M, Ibrahim F, Hefnawy M, Nasr JJ.Rizk M, et al.Acta Pharm. 2007 Jun;57(2):231-9. doi: 10.2478/v10007-007-0019-3.Acta Pharm. 2007.PMID: 17507319Free article.
Rizk M, Mahmoud ZM, Azab MM.Rizk M, et al.Spectrochim Acta A Mol Biomol Spectrosc. 2022 Nov 15;281:121639. doi: 10.1016/j.saa.2022.121639. Epub 2022 Jul 18.Spectrochim Acta A Mol Biomol Spectrosc. 2022.PMID: 35872427