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

File: <base>/training/ningbo/g8/JS17653.hea (758 bytes) 
JS17653 12 500 5000
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JS17653.mat 16x1+24 1000.0(0)/mV 16 0 68 16519 0 aVR
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JS17653.mat 16x1+24 1000.0(0)/mV 16 0 24 6495 0 V2
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JS17653.mat 16x1+24 1000.0(0)/mV 16 0 -34 24852 0 V4
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JS17653.mat 16x1+24 1000.0(0)/mV 16 0 -88 5335 0 V6
# Age: 78
# Sex: Female
# Dx: 164890007,55827005,55930002
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown