GENEVA   A recent attack on the European Gaza Hospital reportedly killed six people and injured 40 others just as the World Health Organization (WHO) staff and patients were gathering for a planned medical evacuation, the UN health agency's chief said on Thursday. Noting that the attack took place on Tuesday, Tedros Adhanom Ghebreyesus said on X that the hospital -- where 12 WHO staff members and 284 patients and their companions were assembled -- was struck ahead of a "pre-coordinated medical