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

File: <base>/training/ningbo/g5/JS15557.hea (761 bytes) 
JS15557 12 500 5000
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JS15557.mat 16x1+24 1000.0(0)/mV 16 0 88 31157 0 V6
# Age: 67
# Sex: Male
# Dx: 164890007,164873001,55930002
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown