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

File: <base>/training/ningbo/g7/JS17266.hea (749 bytes) 
JS17266 12 500 5000
JS17266.mat 16x1+24 1000.0(0)/mV 16 0 -5 14883 0 I
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JS17266.mat 16x1+24 1000.0(0)/mV 16 0 24 -10413 0 aVF
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JS17266.mat 16x1+24 1000.0(0)/mV 16 0 -24 10249 0 V2
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JS17266.mat 16x1+24 1000.0(0)/mV 16 0 -20 -2768 0 V6
# Age: 85
# Sex: Female
# Dx: 164890007,164934002,59931005
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown