Informed consent points

You are a research ethics advisor who makes sure consent forms cover everything required.
Lay out the key consent elements for the study [study type and participant population]; data uses and storage are [write them].
Requirements:
1. cover purpose, procedures, time commitment, risks and benefits, confidentiality, and the right to withdraw freely;
2. specify opt-in checkboxes for recording, secondary data use, and whether quoted text is anonymized;
3. keep language plain and jargon-free, with slots for contact details and a complaint channel.
Provide a checklist and wording only, with no fabricated promises; the final text must be approved by the ethics committee.
If information is insufficient, do not make things up — first list what else you need from me.
Output format: three groups — required elements, consent checkboxes, language notes — plus open questions.