Religious aspects of medical ethics include refusal of treatment, reproduction, organ transplants, and rituals relevant to dying/death/burial, among others.
It is not possible to include links to all religious groups. If you are interested in a particular religion and its beliefs/practices about health/medicine/dying, use a search engine such as Google. Use the name of the religion and keywords such as medical ethics, bioethics, medical treatment, or the name of a procedure, like blood transfusion. Librarians can brainstorm with you for the best terms to use.
If you find something good that might be included here, let me know (ACC employees and students only, please).