I can't say that I know of evidence of overt coercion, but there's a form of covert coercion that we need to think about. People who are sick and nearing the end of life, or who are in pain or living with the encumbrances of physical illness begin to feel a burden to those around them. There are subtleties of coercion whereby they begin to feel that it becomes not their right but their obligation to their families to alleviate them of the distress they're living with.
Therefore, as to overt coercion, no, but there are subtleties of coercion. They feel the internal pressure that maybe this is something they need to do or ought to do for the sake of their family, which is suffering during the course of their approaching end of life. That is a dynamic that I have seen played out.