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

File: <base>/training/ningbo/g11/JS21498.hea (766 bytes) 
JS21498 12 500 5000
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JS21498.mat 16x1+24 1000.0(0)/mV 16 0 -381 11363 0 V2
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JS21498.mat 16x1+24 1000.0(0)/mV 16 0 -459 -17626 0 V6
# Age: 64
# Sex: Male
# Dx: 426177001,713427006,164934002
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown