{Reference Type}: Case Reports {Title}: Mystery case: a 63-year-old man with progressive proximal pain and weakness. {Author}: Scripko PD;Amato AA;Puig A; {Journal}: Neurology {Volume}: 82 {Issue}: 4 {Year}: Jan 2014 28 {Factor}: 11.8 {DOI}: 10.1212/WNL.0000000000000052