Patientswith STD are asked to name other persons of either sex who move in the same socio sexual environment. These patients are then screened for the disease. This process is known as:

Social & Preventive Medicine

Patientswith STD are asked to name other persons of either sex who move in the same socio sexual environment. These patients are then screened for the disease. This process is known as:

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