Define midyear population

Mid-Year Population
Also referred to as the mean population, is regarded as the population at July 1 and is assumed to be the point at which half of the changes in the population during the year have occurred. This is the population estimate that is generally used as the base for the calculation of rates.

Musculoskeletal or gastrointestinal

Whats important is to eat healthy food to prevent heart disease. another why not to get heart disease is to always exercise in a timely manner. lastly, always stay active and go to the doctor for checkups just in case.