Post-COVID syndrome is associated with increased extracellular purine bases and neutrophil extracellular traps in the blood plasma - A. N. Kazimirskii; J. M. Salmasi; G. V. Poryadin; M. I. Panina; V. N. Larina; A. A. Ryzhikh (Бюллетень сибирской медицины, 2022)