Whom should I contact if I have questions or concerns about the treatment protocol? Contact your site Lead PT at any time with questions, concerns or for clarification as needed. Kimberly Williams2019-07-17T09:48:05-06:00January 8th, 2018|ALL ARC TRIAL FAQS, ARC Trial Physical Therapist FAQs, Protocol| Share This On Your Favorite Platform! FacebookXRedditLinkedInTumblrPinterestEmail