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Ning, Guijun, Xuxia Wang, Dan Wu, Zundong Yin, Yixing Li, Huaqing Wang, and Weizhong Yang. "The Etiology of Community-acquired Pneumonia Among Children Under 5 years of Age in Mainland China, 2001–2015: A Systematic Review." Hum Vaccin Immunother 2017.

Ning, Guijun, et al. "The Etiology of Community-acquired Pneumonia Among Children Under 5 years of Age in Mainland China, 2001–2015: A Systematic Review." Hum Vaccin Immunother 2017.