AF	atrial fibrillation
AR	anisotropy ratio
CV	conduction velocity
ECG	electrocardiogram
FAM	fibrotic atrial cardiomyopathy
LA	left atrium
LAT	local activation time
MRI	magnetic resonance imaging
NN	neural network
PTF V1	P wave terminal force in lead V1
PWD	P wave duration
RMSE	root mean square error
SR	sinus rhythm