Objective to evaluate the value of the negative pressure drainage in parotidectomy and analyze the clinical factors correlated with salivary fistula post-parotidectomy.
目的探讨负压引流在腮腺手术中的应用价值，分析与腮腺术后涎瘘相关的临床因素。
Objective: to evaluate the clinical value and the effects of the accommodation factors on the measured results with computerized refraction for checking the refractory errors in youth and children.
目的：探讨电脑验光在儿童及青少年屈光不正验光检验中的应用价值，及调节因素对其测定结果的影响。
Objective to study the clinical value and influential factors of ultrasound-guided lung biopsy in diagnosis of pulmonary masses.
目的探讨超声引导经皮肺穿刺在肺部肿块诊断中的临床应用价值及其影响因素。
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