Table 1.

Chest X-ray datasets.

Dataset	Type	Categories			Total
		Covid-19	Normal	Pneumonia
D${}_1$	Train	98	7,966	5,447	13,511
	Test	10	885	594	1,489
	Total	108	8,851	6,041	15,000
D${}_2$	Train	261	8,154	5,909	14,324
	Test	66	2,038	1,477	3,581
	Total	327	10,192	7,386	17,905