"To: Members of the staff". Annexes (p. 11-55): 1. Definitions -- 2. Contributions and total premium effective 1 September 2015 (expressed as a percentage of applicable net salary) -- 3. Third-party administrator of the Medical Insurance Plan -- 4. Approved regional areas of care -- 5. Examples illustrating specific Medical Insurance Plan rules -- 6. List of reimbursable and non-reimbursable expenses under the United Nations Medical Insurance Plan. The present circular will be in effect until further notice.