前降钙素原、Ｃ－反应蛋白和临床肺部感染评分对呼吸机 相关肺炎诊断的意义 (Zhongshan da xue xue bao. Zhongshan daxue xuebao yixue kexue ban = Journal of Sun Yat-sen University. Yi xue ke xue ban, 2014)