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

File: <base>/training/ptb-xl/g1/HR00256.hea (761 bytes) 
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# Age: NaN
# Sex: Female
# Dx: 164884008,164909002,426783006
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown