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Sankar A, Ayyangar KM, Nehru RM, Kurup PG, Murali V, Enke CA, Velmurugan J.Sankar A, et al. Among authors: ayyangar km.Med Dosim. 2006 Winter;31(4):273-82. doi: 10.1016/j.meddos.2006.06.001.Med Dosim. 2006.PMID: 17134667