%0 Case Reports %T Case 12-2019: A 60-Year-Old Man with Weakness and Difficulty Chewing. %A Doughty CT %A Guidon AC %A Paganoni S %A Hedley-Whyte ET %J N Engl J Med %V 380 %N 16 %D Apr 2019 18 %M 30995378 %F 176.079 %R 10.1056/NEJMcpc1900141 %X