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

File: <base>/training/ningbo/g4/JS14565.hea (759 bytes) 
JS14565 12 500 5000
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JS14565.mat 16x1+24 1000.0(0)/mV 16 0 146 -13978 0 aVF
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JS14565.mat 16x1+24 1000.0(0)/mV 16 0 78 28907 0 V2
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JS14565.mat 16x1+24 1000.0(0)/mV 16 0 -88 10868 0 V4
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JS14565.mat 16x1+24 1000.0(0)/mV 16 0 -68 3201 0 V6
# Age: 80
# Sex: Female
# Dx: 164890007,55930002,427172004
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown