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

File: <base>/training/ningbo/g17/JS27443.hea (749 bytes) 
JS27443 12 500 5000
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JS27443.mat 16x1+24 1000.0(0)/mV 16 0 59 7510 0 II
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JS27443.mat 16x1+24 1000.0(0)/mV 16 0 5 11961 0 V3
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JS27443.mat 16x1+24 1000.0(0)/mV 16 0 -20 1649 0 V6
# Age: 68
# Sex: Male
# Dx: 426177001,59931005,164917005
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown