Under national polio eradication programme, a case of acute flaccid paralysis is confirmed as polio by surveillance after how many days after the onset of paralysis?

Social & Preventive Medicine

Under national polio eradication programme, a case of acute flaccid paralysis is confirmed as polio by surveillance after how many days after the onset of paralysis?

A study is to be conducted with regards to the fat content…

'There has been a gradual increase in number of non-communicable disease cases…

All of the following are done to remove Confounding except