Inside the protesters’ encampment at UCLA, beneath the glow of hanging flashlights and a deafening backdrop of exploding flash-bangs, OB-GYN resident Elaine Chan suddenly felt like a battlefield medic. What are you seeing at protests on your college campus? We want to hear from you. Send tips to NewsTips@kff.org. Police were pushing into the camp after an hours-long standoff. Chan, 31, a medical tent volunteer, said protesters limped in with severe puncture wounds, but there was little hope of getting them to a hospital through the chaos outside. Chan suspects the injuries were caused by rubbe…