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

File: <base>/training/ningbo/g10/JS20341.hea (774 bytes) 
JS20341 12 500 5000
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JS20341.mat 16x1+24 1000.0(0)/mV 16 0 -508 17830 0 aVF
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JS20341.mat 16x1+24 1000.0(0)/mV 16 0 83 14616 0 V2
JS20341.mat 16x1+24 1000.0(0)/mV 16 0 156 32572 0 V3
JS20341.mat 16x1+24 1000.0(0)/mV 16 0 88 31916 0 V4
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# Age: 82
# Sex: Male
# Dx: 284470004,164934002,427084000,427172004
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown