Apr 25 0 Importance of Video to Educate Patients Posted by Admin Dr. Ratkovic spoke @ San Antonio HS website design class. At this talk the students get real-life experience through Euclid Chiropractic’s website critique. This clip: video patient education. Full video here: San Antonio HS LIVE Chiropractors serving Upland, Claremont, Cucamonga, Ontario and surrounding communities. Changing Health from the Inside Out.