case_images: PMC4018985_01
case_images: The two brothers before salbutamol treatment at age 15 and 12 years, respectively. No obvious ptosis is present in both siblings.
case_images: gr1.jpg
case_images: PMC4018985_01_gr1.jpg
case_images: f0005
case_images: Both brothers manifest a proximal limb and facial muscle weakness without any bulbar and ocular symptoms such as ptosis or limitation of eye movements (Fig. 1).