1. World Medical Association. Declaration of Helsinki; CIOMS. International Ethical Guidelines for Biomed Res Involving Human Subjects; 2008. https://www.ncbi.nlm.nih.gov/pubmed/14983848 , https://www.wma.net/what-we-do/medical-ethics/declaration-of-helsinki/ .
2. GUIDELINE FOR GOOD CLINICAL PRACTICE ICH Harmonised Tripartite Guideline. 1996. http://www.jpgmonline.com/text.asp?2001/47/1/45/235 .
3. Hurst SA. Mauron a. a question of method. The ethics of managing conflicts of interest. EMBO REP. 2008;2:119–23.
4. Beecher HK. Ethics and clinical research. NEJM. 1966;274:1354–60.
5. Ebbesen M, Pedersen BD. Empirical investigation of the ethical reasoning of physicians and molecular biologists – the importance of the four principles of biomedical ethics. PEHM. 2007;2:23.