Khaled,
As a fellow physician (Anesthesiology/Interventional Pain), I am in a similar boat to you...I have been adding for almost 8 years now and it is basically my only stock holding at this point. It is a foolish approach, I understand, but with all the data thus far and the inherent logic to the mechanism of action I simply cannot help myself. Win or lose, I don't plan on having this style of investing after my Advaxis experience. Good luck to all of us longs!