PDUD	people with drug use disorders
GP	the general population
CNN	convolutional neural networks
DALYs	disability-adjusted life-years
EDs	emergency departments
DR	diabetic retinopathy
AUC	area under the curve
mHealth	mobile health
LR	learning rates
BN	batch normalization
SGD	stochastic gradient descent
Adam	adaptive moment estimation
Grad-CAM	gradient weighted class activation mapping