Did you know that you can help the UF Health Proton Therapy Institute provide life-saving care every time you shop? AmazonSmile is a website operated by Amazon with the same products, prices and shopping features as Amazon.com. The difference is, when you shop through AmazonSmile and select Florida Proton Therapy Institute, Inc. as your charity organization, Amazon will donate 0.5 percent of the price of your eligible purchases to the Institute.