Many have died in the days since a plane crashed into a school in Bangladesh. For the survivors, there is a critical window for lifesaving treatment.

More than 160 people were injured, with an on-duty doctor at the Uttara Adhunik Medical College Hospital saying most were aged between 10 and 15 years old, many suffering from jet fuel burns. More than 50, including children and adults, were taken to hospital with burns, a doctor at the National Institute of Burn and Plastic Surgery said.