medical authority

... Prisoners of war may not be prevented from presenting themselves to the medical authorities for examination. The detaining authorities shall, upon request, issue to every prisoner who has undergone treatment, an official certificate indicating the nature of his illness or injury, and the duration and kind of treatment received. A duplicate of this certificate shall be forwarded to the Central Prisoners of War Agency. ...

... If any prisoner of war considers himself incapable of working, he shall be permitted to appear before the medical authorities of his camp. Physicians or surgeons may recommend that the prisoners who are, in their opinion, unfit for work, be exempted therefrom. ...

... However, prisoners of war who, in the opinion of the medical authorities of the Detaining Power, are manifestly seriously injured or seriously sick, may be repatriated without having to be examined by a Mixed Medical Commission. ...

... Besides those who are designated by the medical authorities of the Detaining Power, wounded or sick prisoners of war belonging to the categories listed below shall be entitled to present themselves for examination by the Mixed Medical Commissions provided for in the foregoing Article: ...