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

File: <base>/training/ningbo/g19/JS28857.hea (739 bytes) 
JS28857 12 500 5000
JS28857.mat 16x1+24 1000.0(0)/mV 16 0 -10 -16508 0 I
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JS28857.mat 16x1+24 1000.0(0)/mV 16 0 63 11615 0 aVR
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JS28857.mat 16x1+24 1000.0(0)/mV 16 0 -107 -22724 0 V6
# Age: 57
# Sex: Male
# Dx: 426177001
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown