Sezgin, Yılmaz. 2023. “Evaluation of Serum Vitamin B12 Levels in Patients With COVID-19 Infection: A Case-Control Study: Evaluation of Serum Vitamin B12 in Patients With COVID-19”. Journal of Medical Biochemistry 42 (3): 524-29. https://doi.org/10.5937/jomb0-42357.