Exploitation of Design-of-Experiment Approach for Design and Optimization of Fast-Disintegrating Tablets for Sublingual Delivery of Sildenafil Citrate with Enhanced Bioavailability... oleh Amer S. AlAli, Mohammed F. Aldawsari, Ahmed Alalaiwe, Bjad K. Almutairy, Ramadan Al-Shdefat, Ismail A. Walbi, Mohamed H. Fayed