Thank you Audrey for asking my question (which was answered), and for Colleen and others who monitor this site. Thanks so much to Dr. Q and Dr. Guerrero Cazares for their time to provide this great overview, and helpful answers to all questions. Their upbeat manner, comprehensive knowledge, and superb patient orientation are so impressive. Praying for them and their teams as they care for patients afflicted with brain tumors, as they educate their patients & families and many others, and as they seek new treatments and cures.