The relation for 'treats' when methods used for treatment are the domain. The defining composition means that some set of instructions (such as a guideline) are a method of a care process performed by some agent who treats a clinical condition or a patient or disabled group.
(<=> (Treatment-Method-Of ?A ?B) (And (Clinical-Actor-Of ?A ?B) (Exists (?C) (And (Method-Of ?A ?C) (Treatment-Action-Of ?C ?B)))))