Some guidelines address the researchers obligations not just to do the research but to do a follow up on providing medical care to the participants after the research is completed. There is no clear guide to have ethical answers to what happens to the participants when the research is complete? Or what are the researchers if any obligation toward the participants that were enrolled as untreated in the specific group? Provide examples of vulnerable populations.  Some of the low-income countries and low institutional capacity for data are usually vulnerable to compromising the confidentiality, there is still no consensus of who has the responsibility to report back to the participants and their well-being after the trials. Thoughts about ethics in research?  
Instructions:
Use an APA style and a minimum of 100 words. Provide support from scholarly sources. The scholarly source needs to be: 1) evidence-based, 2) scholarly in nature, 3) Sources should be no more than five years old (published within the last 5 year), and 4) an in-text citation. citations and references are included when information is summarized/synthesized and/or direct quotes are used, in which APA style standards apply. 
¢ Textbooks are not considered scholarly sources. 
¢ Wikipedia, Wikis, .com website or blogs should not be used.