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

File: <base>/training/ningbo/g3/JS12857.hea (769 bytes) 
JS12857 12 500 5000
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# Age: 66
# Sex: Male
# Dx: 713422000,427084000,698252002,284470004
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown