Johns Hopkins myositis clinic: anti-mitochondrial Abs (AMA) found in 5% adult myositis, 1% of juv. myositis pts. AMA assoc. w/ severe muscle weakness, Raynauds, dysphagia, cardiomyopathy & treatment refractory Dz - Screening for cardiac & swallowing https://t.co/oj9kwHgTHf