The document discusses the key ethical principles of justice, respect for autonomy, and beneficence that must govern maternal death review activities. These principles are maintained through equitable recruitment of subjects, obtaining informed consent from participants, and protecting the rights and welfare of interviewees. The informed consent process involves clearly describing the study purpose, inviting voluntary participation, explaining the interview process, informing participants of risks and benefits, ensuring confidentiality of data, and allowing participants to stop the interview at any time.