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Rizk M, Belal F, Ibrahim F, Ahmed S, el-Enany N.Rizk M, et al.Pharm Acta Helv. 2000 Apr;74(4):371-7. doi: 10.1016/s0031-6865(00)00025-x.Pharm Acta Helv. 2000.PMID: 10812936