Cardiomyopathy may be seen in all except-: (A) Duchenne muscular dystrophy, (B) Friedreich's ataxia, (C) Type II glycogen storage, (D) Alkaptonuria
Answer is D. Etiological classification of cardiomyopathy:
A. Primary myocardial involvement

Idiopathic (D, R, H)
Familial (D, R, H)
Eosinophilic endomyocardial disease (R)
Endomyocardial fibrosis (R)

B) Secondary myocardial involvement