A physician requests information about the use of sildenafil for treatment of female sexual arousal disorder. She also requests information about use of any of the other phosphodiesterase-5 inhibitors. a) List three (3) resources that might be good places to look for this information. (3 marks) b) Formulate a written response to the request. Please state any assumptions that were made in order to answer the question. Remember to include references. (5 marks)