In vitro & ex vivo Acetylcholinesterase Inhibitory Activity of Morinda citrifolia Linn (Noni) Fruit Extract, Jeyabalan, Srikanth, Subramanian Kavimani, Cheekala Uma Maheswara, and Krishnan Chitra , Pharmacognosy Journal, September 2017, Volume 9, Issue 6, p.900-905, (2017)