Will Two Do? Varying Dimensions in Electrocardiography: The PhysioNet/Computing in Cardiology Challenge 2021 1.0.3

File: <base>/training/ningbo/g11/JS20737.hea (755 bytes) 
JS20737 12 500 5000
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JS20737.mat 16x1+24 1000.0(0)/mV 16 0 39 1740 0 V6
# Age: 89
# Sex: Female
# Dx: 284470004,427084000,55827005
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown