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

File: <base>/training/ningbo/g30/JS40220.hea (738 bytes) 
JS40220 12 500 5000
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JS40220.mat 16x1+24 1000.0(0)/mV 16 0 -10 27035 0 aVR
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JS40220.mat 16x1+24 1000.0(0)/mV 16 0 68 15715 0 aVF
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# Age: 45
# Sex: Female
# Dx: 426783006
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown