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Maslova MN, Ogorodnikova LE, Titkov IuS.Maslova MN, et al. Among authors: titkov ius.Fiziol Zh SSSR Im I M Sechenova. 1991 Sep;77(9):232-7.Fiziol Zh SSSR Im I M Sechenova. 1991.PMID: 1666609Russian.