T3/rT3-Ratio is Associated with Insulin Resistance Independent of TSH - Ruhla, S.; Arafat, A. M.; Weickert, M. O.; Osterhoff, M.; Isken, F.; Spranger, J.; Schöfl, C.; Pfeiffer, A. F. H.; Möhlig, M. (Hormone and Metabolic Research, 2011)