The rule of double effect.
Manfredi
P L
PL
Morrison
R S
RS
Meier
D E
DE
D003657:Decision Making; D004992:Ethics, Medical; D006801:Humans; D009294:Narcotics / Q000494:pharmacology*; D010146:Pain / Q000188:drug therapy; D013727:Terminal Care
D009294:Narcotics