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

File: <base>/training/chapman_shaoxing/g3/JS03013.hea (731 bytes) 
JS03013 12 500 5000
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JS03013.mat 16x1+24 1000.0(0)/mV 16 0 59 11014 0 V2
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JS03013.mat 16x1+24 1000.0(0)/mV 16 0 -78 14556 0 V6
# Age: 49
# Sex: Female
# Dx: 426177001
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown