Samer Attar, MD, an orthopedic surgeon who is volunteering in the war-torn city of Aleppo, Syria, gave NBC News an update on the worsening situation in the region.
Here are six key notes:
1. Dr. Attar, a Chicago-based Northwestern Medicine surgeon, said that an important highway was recently closed, cutting off an essential food and supply line into the city.
2. He had been providing humanitarian care at an underground hospital run by local physicians and supported by the Syrian American Medical Society.
3. He said that he sees "civilians horrifically and brutally injured from rockets, barrel bombs, and cluster bombs," everyday.
4. Dr. Attar is urging the international community to act to help Aleppo and prevent the crisis in Syria from getting worse.
5. Dr. Attar is an assistant professor in orthopedic surgery at Northwestern Medicine.
6. He has completed fellowship training at Rochester, Minn.-based Mayo Clinic and University of Chicago Pritzker School of Medicine.