相关规则
Sweden
Practice Relating to Rule 111. Protection of the Wounded, Sick and Shipwrecked against Pillage and Ill-Treatment
Sweden’s IHL Manual (1991) considers that Article 17 of the 1977 Additional Protocol I on the role of aid organizations has the status of customary law. 
Sweden, International Humanitarian Law in Armed Conflict, with reference to the Swedish Total Defence System, Swedish Ministry of Defence, January 1991, Section 2.2.3, p. 18.