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

File: <base>/training/ningbo/g14/JS23697.hea (761 bytes) 
JS23697 12 500 5000
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JS23697.mat 16x1+24 1000.0(0)/mV 16 0 459 22898 0 V6
# Age: 74
# Sex: Male
# Dx: 164934002,427084000,427172004
# Rx: Unknown
# Hx: Unknown
# Sx: Unknown