L. Wang

Risk factors in chronic obstructive pulmonary malfunction and "chronic bronchitis" symptoms in Beijing district: a joint study between Japan and China.

X. Xu, N. Shimojo, K. Kano, 1989, Journal of epidemiology and community health.

Plasma glucose levels and diabetes are independent predictors for mortality and morbidity in patients with SARS

J. Chan, X. Xu, X. Xu, 2006, Diabetic medicine : a journal of the British Diabetic Association.

Effects of air pollution on adult pulmonary function.

D. Dockery, X. Xu, D W Dockery, 1991, Archives of environmental health.