The Secretary and the Service shall submit to Congress the study prepared under subsection (a) no later than the date eighteen months after December 17, 1980. The health care plan prepared under subsection (b) shall be submitted in a report no later than the date one year after the date that the study prepared under subsection (a) is submitted to Congress. Such report shall include recommended activities for the implementation of the plan, as well as an evaluation of any activities previously undertaken by the Service to address such health problems.