SpO2, oxygen saturation; T2D, type 2 diabetes; TB, total bilirubin; TCM, traditional Chinese medicine; TCM, traditional Chinese medicine; TLC, total lymphocyte count; TnT, troponin T; WBC, white blood cell. John Wiley & Sons, Ltd. This article is being made freely available through PubMed Central as part of the COVID-19 public health emergency respon