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

File: <base>/training/ningbo/g34/JS44058.hea (708 bytes) 
JS44058 12 500 5000
JS44058.mat 16x1+24 1000.0(0)/mV 16 0 200 18783 0 I
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JS44058.mat 16x1+24 1000.0(0)/mV 16 0 -224 -22465 0 III
JS44058.mat 16x1+24 1000.0(0)/mV 16 0 -88 31282 0 aVR
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JS44058.mat 16x1+24 1000.0(0)/mV 16 0 0 0 0 V2
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# Age: 12
# Sex: Male
# Dx: 427084000
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown