CXCL12 and COVID-19: The non-pregnant COVID-19 patients exhibited high levels of IL-4 and IL-9, and several inflammatory chemokines and growth factors including MIP-1β/CCL4, CATCK/CCL27, RANTES/CCL5, Eotaxin/CCL11, GRO-α/CXCL1, LIF, FGF, PDGF-BB, SDF-1α, and tumor necrosis factors (TNFs) were also highly expressed in non-pregnant COVID-19 group.