Assist in the performance
Assist in the performance means to take an action that has a specific, reasonable, and articulable connection to furthering a procedure or a part of a health service program or research activity undertaken by or with another person or entity. This may include counseling, referral, training, or otherwise making arrangements for the procedure or a part of a health service program or research activity, depending on whether aid is provided by such actions.
Source
45 CFR § 88.2
Scoping language
For the purposes of this part: