1. A note on interviewing spouses together;Allan;JMF,1980
2. Recognizing and overcoming challenges of couple interview research;Mellor;QHR,2013
3. Confronting the ethics of qualitative research;Brinkmann;J Constr Psychol,2005
4. WMA Declaration of Helsinki - Ethical Principles for Medical Research Involving Human Subjects https://www.wma.net/what-we-do/medical-ethics/declaration-of-helsinki/