Phytochemical and Antidiabetic Evaluation of the Methanolic Stem Bark Extract of Spathodea campanulata (P. Beauv.) Bignoniaceae, Kihdze, Tanayen Julius, Mayowa Ajayi Abayomi, Joseph Oloro, OC Ezeonwumelu Joseph, Ghaife Tanayen Grace, Bulus Adzu, van Aerschot Arthur, Laekeman Gert, and Ganafa Agaba Amon , Pharmacognosy Journal, Jan/2016, Volume 8, Issue 3, p.243-249, (2016)