Valerie Askanas1, William King Engel2. 1. USC Neuromuscular Center, Good Samaritan Hospital 637 S. Lucas Ave, 3rd floor Los Angeles, CA 90017. Electronic address: askanas@usc.edu. 2. USC Neuromuscular Center, Good Samaritan Hospital 637 S. Lucas Ave, 3rd floor Los Angeles, CA 90017.