Ren, R., Shi, Y., & Zhang, Y. Association between blood urea nitrogen to serum albumin ratio and in-hospital mortality of patients with chronic obstructive pulmonary disease in the intensive care unit: A retrospective cohort study. SpringerOpen.
Chicago Style (17th ed.) CitationRen, Rui, Yushan Shi, and Yanmei Zhang. Association Between Blood Urea Nitrogen to Serum Albumin Ratio and In-hospital Mortality of Patients with Chronic Obstructive Pulmonary Disease in the Intensive Care Unit: A Retrospective Cohort Study. SpringerOpen.
MLA (9th ed.) CitationRen, Rui, et al. Association Between Blood Urea Nitrogen to Serum Albumin Ratio and In-hospital Mortality of Patients with Chronic Obstructive Pulmonary Disease in the Intensive Care Unit: A Retrospective Cohort Study. SpringerOpen.