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

File: <base>/training/ningbo/g3/JS13577.hea (797 bytes) 
JS13577 12 500 5000
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JS13577.mat 16x1+24 1000.0(0)/mV 16 0 -39 5186 0 V2
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# Age: 88
# Sex: Female
# Dx: 111975006,55827005,59931005,164934002,164890007,713426002,10370003
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown