The fighting in Syria’s besieged enclave of eastern Aleppo has killed 338 people in the past few weeks, including 106 children, while 846 have been injured, including 261 children, a senior World Health Organization official said on Friday. “We are asking for four things: stop the killing, stop attacks on health care, let the sick and wounded out and let the aid in,” WHO’s head of emergency risk management and humanitarian response told a U.N. briefing in Geneva.