The Board shall be composed of 5 members who shall be appointed by the Governor as follows: 2 coroners, one forensic pathologist from the Cook County Medical Examiner’s Office, one forensic pathologist from a county other than Cook County, and one citizen of Illinois who is not currently or was a coroner or forensic pathologist. The initial appointments by the Governor shall be made on the first Monday of August in 2016 and the initial appointments’ terms shall be as follows: one coroner and one forensic pathologist shall be for a period of one year, the second coroner and the second forensic pathologist for 3 years, and the citizen for a period of 3 years. Their successors shall be appointed in like manner for terms to expire the first Monday of August each 3 years thereafter. All members shall serve until their respective successors are appointed and qualify. Vacancies shall be filled by the Governor for the unexpired terms.