Coronavirus 2019 (COVID-19) is an emerging infectious disease caused by a new coronavirus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) [1]. The wide spectrum of clinical ...
Genetic variations in the major histocompatibility complex (MHC) region at chromosomes 6p21 are strongly associated with the risk of autoimmune diseases such as rheumatoid arthritis (RA), a common ...