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

File: <base>/training/ningbo/g34/JS44272.hea (706 bytes) 
JS44272 12 500 5000
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JS44272.mat 16x1+24 1000.0(0)/mV 16 0 -117 16203 0 III
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JS44272.mat 16x1+24 1000.0(0)/mV 16 0 0 0 0 V2
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# Age: 9
# Sex: Female
# Dx: 427084000
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown