Fig. 1From: Efficacy and safety of levothyroxine (L-T4) replacement on the exercise capability in chronic systolic heart failure patients with subclinical hypothyroidism: Study protocol for a multi-center, open label, randomized, parallel group trial (ThyroHeart-CHF)Study Flowchart. TSH serum thyroid hormone, L-T4 levothyroxine, CHF chronic heart failureBack to article page