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

File: <base>/training/ningbo/g21/JS31274.hea (733 bytes) 
JS31274 12 500 5000
JS31274.mat 16x1+24 1000.0(0)/mV 16 0 -24 11857 0 I
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JS31274.mat 16x1+24 1000.0(0)/mV 16 0 5 2243 0 aVF
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JS31274.mat 16x1+24 1000.0(0)/mV 16 0 -5 17646 0 V2
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JS31274.mat 16x1+24 1000.0(0)/mV 16 0 15 7438 0 V6
# Age: 75
# Sex: Male
# Dx: 426177001,164934002
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown