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

File: <base>/training/ningbo/g1/JS11558.hea (780 bytes) 
JS11558 12 500 5000
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JS11558.mat 16x1+24 1000.0(0)/mV 16 0 -24 -30252 0 V2
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# Age: 63
# Sex: Female
# Dx: 713422000,270492004,426783006,284470004
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown