问:我驾驶小汽车与一辆闯黄灯的自行车发生碰撞,骑自行车的刘强受伤,医院诊断为股骨颈骨折。住院治疗1周后,刘强没有征求我的意见,也未经交警同意,擅自转到另外一家医院治疗,并接受了全髋关节置换手术,医药费高达4万余元。最近,交警部门向我送达《交通事故认定书》,认定我与刘强对交通事故负同等责任。请问:我可以拒付刘强擅自转院医疗的费用吗? Q: I was driving a car with a yellow light running through the bicycle collision, Liu Qiang riding a bicycle injury, the hospital diagnosed as femoral neck fracture. One week after hospitalization, Liu Qiang did not seek my advice. He also went to another hospital for treatment without consent from the traffic police and accepted the total hip replacement surgery. The medical expenses were as high as 40,000 yuan. Recently, the traffic police department served me with the “Certificate of Traffic Accident” and held that I and Liu Qiang were equally responsible for the traffic accident. I ask: can I refuse to pay Liu Qiang unauthorized transfer of medical fees?