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

File: <base>/training/ningbo/g3/JS13335.hea (763 bytes) 
JS13335 12 500 5000
JS13335.mat 16x1+24 1000.0(0)/mV 16 0 -63 16543 0 I
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JS13335.mat 16x1+24 1000.0(0)/mV 16 0 34 618 0 aVR
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JS13335.mat 16x1+24 1000.0(0)/mV 16 0 161 -13617 0 V2
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# Age: 82
# Sex: Female
# Dx: 164890007,164934002,59931005,713427006
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown