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Expression of facial mimicry of the patient. These photographs were obtained 8 months after disease onset. The physician faced the patient and sequentially showed several facial expressions to the patient. The physician gazed at the patient (a). Then, sequentially, the physician widely opened the eyes (b) and showed a smiling expression (joy) (c), sadness (tragedy) (d), astonishment (surprise) (e), and a wry expression (grimacing)(f).
