His Highness the Amir Sheikh Sabah Al-Ahmad Al-Jaber Al-Sabah has underwent successful regular medical checkups at a hospital in the United States, Amiri Diwan stated on Sunday. His Highness the Amir has also underwent a successful minor surgery, the statement added, noting that His Highness the Amir is to be discharged from the hospital after he spends a period of convalescence.