J. Zong and Y. Sun, “A Single-Center Retrospective Study to Identify Homocysteine Reference Intervals in Healthy Chinese 60 Years of Age and Above: Homocysteine Reference Intervals in the elderly”, J Med Biochem, vol. 42, no. 4, pp. 630–637, Apr. 2023, doi: 10.5937/jomb0-40154.