“…Excessive burdens in terms of financial costs or inconvenience of lifestyle are measured by "the semi-objective standard of the common person regularly con s i d e r e d , " o r w h a t w e r e f e r t o a s t h e "reasonable person standard." 37 If the means used to prolong life were ineffective, if the effect was doubtful, or if it involves a grave burden for the person in question, this means need not be morally obligatory. Prior to the development of modern anesthesia, surgical procedures, especially amputations, were quite painful.…”