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

File: <base>/training/ningbo/g2/JS12120.hea (742 bytes) 
JS12120 12 500 5000
JS12120.mat 16x1+24 1000.0(0)/mV 16 0 -24 16335 0 I
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# Age: 70
# Sex: Female
# Dx: 426177001,270492004
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown