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

File: <base>/training/ningbo/g18/JS28591.hea (761 bytes) 
JS28591 12 500 5000
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JS28591.mat 16x1+24 1000.0(0)/mV 16 0 -24 32727 0 V2
JS28591.mat 16x1+24 1000.0(0)/mV 16 0 -15 4122 0 V3
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# Age: 62
# Sex: Male
# Dx: 55827005,59931005,429622005,426177001,55930002
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown