Antiangiogenic therapy with recombinant human endostatin may improve blood perfusion of cervical node with necrosis in nasopharyngeal carcinoma patients: A preliminary study by using contrast-enhanced ultrasound

• Zhendong Yang
• Huimin Xiao
• Xigui Li
• Zhuxin Wei
• Min Kang
• Rensheng Wang
• Jianyuan Huang