A 34-year old man had a two-month history of weight loss, palpitations, night sweating, low-grade fever, and neck pain. His past history was unremarkable, he took no medications including over-the-counter medications before the illness, had no known allergies, and did not drink alcohol or use illicit drugs. Physical examination revealed a tender goiter. Laboratory findings showed neutrophil leukocytes 12,161/mm3, C-reactive protein 36.8mg/L (normal