S. Tiamkao, S. Tiamkao, V. Chotmongkol, and S. Jitpimolmard, “Prevalence and Clinical Features of Myasthenia Gravis only and Myasthenia Gravis with hyperthyroidism”, SRIMEDJ, vol. 9, no. 1, pp. 8–13, Nov. 2013.