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

File: <base>/training/ningbo/g35/JS45399.hea (695 bytes) 
JS45399 12 500 5000
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JS45399.mat 16x1+24 1000.0(0)/mV 16 0 49 -6811 0 III
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# Age: 82
# Sex: Female
# Dx: 81898007
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown