skeletal muscle fibers isolated from 50 muscle specimens from 10 children with cardiomyopathy of unknown cause are compared to those from 18 specimens from 5 patients with skeletal muscle myopathies , 45 specimens from 18 patients with congenital heart disease , and 15 specimens from 7 patients with no genetic , chromosomal , or cardiac disease .
C0878544
cardiomyopathy
C0026848
myopathies