Another air strike in the Syrian city where a hospital was hit overnight has brought the death toll to 61 in 24 hours, according to activists.
Syria's state media has raised the death toll in reports of rebel shelling of the government-held parts of the contested northern city of Aleppo, with Syrian TV now saying 14 civilians were killed.
The state SANA news agency said the shelling on Thursday also wounded 10 people. The shelling came just hours after a series of air strikes hit a key hospital and nearby buildings in the rebel-held areas of the city, killing at least 27, including doctors and children.
The hospital was supported by Doctors Without Borders and the International Committee of the Red Cross (ICRC). One of the doctors was reportedly the last paediatrician in the city.
Aleppo has been bitterly contested since 2012. Opposition groups control the eastern part of the city but have been boxed-in by government forces, and are now linked to the surrounding area by a single narrow corridor to the northwest.
The ICRC is warning that the northern Syrian city of Aleppo is on the brink of a humanitarian disaster as a result of renewed fighting there.
Marianne Gasser, head of the ICRC mission in Syria, said the attack on the ICRC-supported Quds hospital in Aleppo was "unacceptable and sadly this is not the first time the lifesaving medical services have been hit".
The ICRC also said stocks of contingency food and medical aid were expected to run out soon and warned that an escalation in fighting meant that they could not be replenished.
A Syrian monitoring group and a first-responders team said new air strikes on the rebel-held part of the contested city of Aleppo had killed 20 people and brought down at least one residential building.
The new violence on Thursday brings the death toll in the past 24 hours in the deeply divided city to at least 61 killed.