Source: https://ihl-databases.icrc.org/customary-ihl/eng/docs/v2_cou_be_rule92
Timestamp: 2019-04-25 08:54:33+00:00

Document:
Belgium’s Law of War Manual (1983) provides that carrying out medical and biological experiments on protected persons is a grave breach of the 1949 Geneva Conventions.
19. unless justified under the conditions provided in § 18, acts which consist in carrying out on any persons protected under § 18, even with their consent, physical mutilation, medical or scientific experiments, or removal of tissue or organs for transplantation, except in cases of donations of blood for transfusion or of skin for grafting, provided that such donations are voluntary, consented to and intended for therapeutic purposes.
Belgium, Penal Code, 1867, as amended on 5 August 2003, Chapter III, Title I bis, Article 136 quater, § 1(2), (18) and (19).
1. violence to life and person, in particular … mutilation.
Belgium, Penal Code, 1867, as amended on 5 August 2003, Chapter III, Title I bis, Article 136 quater, § 2(1).
… biological experiments, … acts and omissions not justified in the law which are likely to endanger the physical or mental health and integrity of persons protected by one of the Conventions relative to the protection of wounded, sick and shipwrecked persons, in particular any medical procedure which is not indicated by the state of health of such persons or not consistent with generally accepted medical standards … [and] acts which consist in carrying out … physical mutilations, medical or scientific experiments or the removal of tissue or organs for transplantation, except in the cases of donations of blood for transfusion or of skin for grafting, provided that such donations are voluntary, consented to and intended for therapeutic purposes.
Belgium, Law concerning the Repression of Grave Breaches of the Geneva Conventions and their Additional Protocols, 1993, as amended in 1999, Article 1(3)(2) and (9)–(10).
10. unless justified under the conditions provided in § 18, acts which consist in carrying out on any persons protected under § 18, even with their consent, physical mutilation, medical or scientific experiments, or removal of tissue or organs for transplantation, except in cases of donations of blood for transfusion or of skin for grafting, provided that such donations are voluntary, consented to and intended for therapeutic purposes.
Belgium, Law relating to the Repression of Grave Breaches of International Humanitarian Law, 1993, as amended on 23 April 2003, Article 1 ter, § 1(2), (9) and (10).
Belgium, Law relating to the Repression of Grave Breaches of International Humanitarian Law, 1993, as amended on 23 April 2003, Article 1 ter, § 2(1).

References: § 18
 § 18
 § 1
 § 2
 § 18
 § 18
 § 1
 § 2