Interdisciplinary communication is basically just when multiple academic subjects/field of studies get combined for a lesson.
Patients of hospitals with a high index of suspicion, and Healthcare providers that utilize needles ( primarily because blood from either can get into the wounds of one another).
Additionally I think servicemen are obligated to have one done on them. Additionally those who wish to donate blood are required to have a negative blood test.
Ron is being proactive knowing high blood pressure runs in his family he studied what the causes and signs were so he knows to avoid certain foods and to exercise to keep his blood pressure under control.