Features Number of patient Percentage Ptosis  35 100 External ophthalmoplegia  33 94.2 Broken neck sign  28 80 Dysphagia  27 77.1 Dysphonia/nasal voice  24 68.5 Weakness of grip  23 65.7 Depressed reflexes  9 25.7

Table 3: Neurological features (n=35).