Table:
chronic conditions

arthritis
high blood pressure
asthma
mood disorder
anxiety disorder

percentage

total aboriginal identity female population
22.2
17.2
16.6
16.9
17.0

off-reserve first nations
23.4
17.4
17.5
18.6
17.6

metis
21.3
17.1
16.7
16.2
17.8

inuit
15.2
14.8
9.3
8.2
7.1

non-aboriginal identity female population
14.7
13.1
10.6
10.3
9.4

Examine the table in this image and extract any merged cell regions. Please format the merged cell regions as JSON {'top-left':(X, Y), 'bottom-right':(Z, W)}, with (X, Y) indicating the (row_id, column_id) of the top-left cell and (Z, W) the bottom-right cell in the merged regions. Remember that the X, Y, Z, W all start from 1.

The merged cell regions are as follows:
{'top-left':(1, 1), 'bottom-right':(3, 1)}
{'top-left':(1, 2), 'bottom-right':(1, 6)}
{'top-left':(3, 2), 'bottom-right':(3, 6)}.