1. Neuromuscular Service, Department of Neurology, Tel Aviv Medical Center, Tel Aviv, Israel
2. Clinical Immunology Laboratory, Tel Aviv Medical Center, Tel Aviv, Israel
3. Tissue Typing Laboratory, Rabin Medical Center, Petach Tikva, Israel4Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
4. Neuromuscular Service, Department of Neurology, Tel Aviv Medical Center, Tel Aviv, Israel4Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel