Four staff have been killed in an air strike on a medical facility in Syria, a relief group has said.
The International Union of Medical Care and Relief Organisations said the attack in northern Syria levelled a medical triage point in rebel-held territory outside the contested city of Aleppo.
The Britain-based Syrian Observatory for Human Rights put the toll at 13 dead - four nurses and paramedics and nine rebel fighters, some of them belonging to the al Qaida-linked Fatah al-Sham Front.
The monitoring group said the triage point was in the rebel-held town of Khan Touman, south of Aleppo.