Hyperthyroidism
WikEM overview of Hyperthyroidism: https://www.wikem.org/wiki/Hyperthyroidism
(Peer Reviewed!) 7 common questions in diagnosing hyperthyroidism: http://www.foamem.com/2013/10/07/diagnosing-hyperthyroidism-answers-to-7-common-questions/
ECG changes in the hyperthyroid patient: http://lifeinthefastlane.com/ecg-library/hyperthyroidism/