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

File: <base>/training/ningbo/g12/JS22223.hea (755 bytes) 
JS22223 12 500 5000
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JS22223.mat 16x1+24 1000.0(0)/mV 16 0 -78 3789 0 V4
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JS22223.mat 16x1+24 1000.0(0)/mV 16 0 -39 -27172 0 V6
# Age: 70
# Sex: Male
# Dx: 426177001,6374002,39732003
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown