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Liu HP, Tay SS, Leong SK.Liu HP, et al. Among authors: leong sk.J Auton Nerv Syst. 1996 Dec 14;61(3):248-56. doi: 10.1016/s0165-1838(96)00090-2.J Auton Nerv Syst. 1996.PMID: 8988482