Ni, Yiyun, et al. “A Case of Hemorrhagic Fever With Renal Syndrome and Abnormal Serum Levels of Ferritin, Vitamin B12, and Folic Acid”. The Journal of Infection in Developing Countries, vol. 18, no. 01, Jan. 2024, pp. 168-71, doi:10.3855/jidc.18541.