Study Area
The full-scale study is being conducted prospectively on about 20,000 subjects from 12 randomly selected low to middle-income communities in Karachi.

|

|
New Karachi (Sector 11-D) |
| Rehmani Garden (Nishtar Rd) |
| Aurangabad (Nazimabad) |
| Korangi 3½ |
| Saghir centre F.B. Area (Block 16) |
| Villayatabad (Pak Colony) |
| Saudabad (Malir) |
| Safoorah Goth (Zohra Nagar, Johar Complex) |
| Orangi Town no. 11 |

|
Liaqatabad B-Area |
| Ramswami (Bagh-e-Halar) |
| Bhutta Village (Kemari) |
| |
| |
| |
| |
|