Angela decided to sell her summer home to Theo. They wrote out the details on a cocktail napkin, and both parties signed it. In order to qualify as a written contract that satisfies the writing requirement, this agreement would need to contain:

Awaiver of the requirement for documentation of informed consent may be granted when: the investigator has no convenient place to store signed consent forms separate from the research datathe only record linking the subject and the research is the consent document and the principal risk is a breach of confidentiality.potential subjects might find some of the research questions embarrassing, personal, or intrusivethe subjects are literate in their own language; however, they do not read, write, or speak english