Prevalence and risk factors for pterygium: a cross-sectional study in Han and Manchu ethnic populations in Hebei, China.

MLA

Zhouxian Pan, et al. “Prevalence and Risk Factors for Pterygium: A Cross-Sectional Study in Han and Manchu Ethnic Populations in Hebei, China.” BMJ Open, vol. 9, no. 2, Feb. 2019, pp. 1–12. EBSCOhost, https://doi.org/10.1136/bmjopen-2018-025725.

APA

Zhouxian Pan, Jiantao Cui, Guangliang Shan, Yuyu Chou, Li Pan, Zixi Sun, Ze Cui, Jixin Sun, Yajing Cao, Jingjing Zhao, Xinyan Ma, Jifei Ma, Huijing He, Jin Ma, & Yong Zhong. (2019). Prevalence and risk factors for pterygium: a cross-sectional study in Han and Manchu ethnic populations in Hebei, China. BMJ Open, 9(2), 1–12. https://doi.org/10.1136/bmjopen-2018-025725

Chicago

Zhouxian Pan, Jiantao Cui, Guangliang Shan, Yuyu Chou, Li Pan, Zixi Sun, Ze Cui, et al. 2019. “Prevalence and Risk Factors for Pterygium: A Cross-Sectional Study in Han and Manchu Ethnic Populations in Hebei, China.” BMJ Open 9 (2): 1–12. doi:10.1136/bmjopen-2018-025725.