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

File: <base>/training/ningbo/g20/JS30553.hea (745 bytes) 
JS30553 12 500 5000
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# Age: 69
# Sex: Male
# Dx: 426177001,164934002,59931005
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown