Hermann Hermann M M Richter Richter B B Roka Roka R R Freissmuth Freissmuth M M Thyroid surgery in untreated severe hyperthyroidism: perioperative kinetics of free thyroid hormones in the glandular venous effluent and peripheral blood Thyroid surgery in untreated severe hyperthyroidism: perioperative kinetics of free thyroid hormones in the glandular venous effluent and peripheral blood Surgery Surgery 1994 1994 115 115 2 2 240 240 245 245 8310413 8310413. This evidence concerns the gene TG and hyperthyroidism.