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

File: <base>/training/ningbo/g8/JS17672.hea (748 bytes) 
JS17672 12 500 5000
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JS17672.mat 16x1+24 1000.0(0)/mV 16 0 -39 7370 0 II
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JS17672.mat 16x1+24 1000.0(0)/mV 16 0 -59 -1169 0 aVF
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JS17672.mat 16x1+24 1000.0(0)/mV 16 0 -15 5345 0 V2
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# Age: 68
# Sex: Female
# Dx: 164890007,164934002,59931005
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown