TY - Journal of Otolaryngology and Ophthalmology of Shandong University A1 - SHANG Guan han-jing,LI Zhi-chun T1 - Y1 - 2006-08-24 JF - Journal of Otolaryngology and Ophthalmology of Shandong University JO - Journal of Otolaryngology and Ophthalmology of Shandong University SP - 374 EP - 377 VL - 20 IS - 4 UR - http://ebhyxbwk.njournal.sdu.edu.cn N1 - ER -