Government air strikes have hit three clinics in rebel-held districts of Aleppo on Friday, rescue workers and sources in the city said.

One strike on the Al-Marja neighbourhood wounded several people, including at least one nurse, the civil defence, known as the White Helmets, said.

Other medical facilities were destroyed in Bustan Qaser and Al-Qoba.

No deaths were reported after the attacks but at least ten civilians died on seperate strikes in the Bustan Qaser neighbourhood.

The clinic in Al-Marja had been providing dental services and treatment for chronic illnesses for about five years.

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Al Jazeera's Andrew Simmons, reporting from the Syria-Turkey border, said that it had been effectively destroyed in the strike.

"This is a medical centre that deals with chronic illnesses and dental surgery," he said. "But it is being used, obviously every facility possible is being used, for medical treatment in Aleppo right now."

The attack came after the Syrian army said in a statement that a "regime of calm" would be enforced in parts of Latakia and Damascus regions from 1am local time (22:00 GMT) on April 30.

It will last for 24 hours in the Eastern Ghouta region east of Damascus and in Damascus, and for 72 hours in areas of the northern Latakia countryside, the statement from the Syrian Army General Command said.

It did not mention Aleppo.

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