Families alerted when one sent a Whatsapp message to sister near border . Lena Abdulqadir said she wanted to ‘ volunteer to help wounded British ' Teenagers born and raised in England and studied medicine in Sudan . Officials believe they have gone to work in hospitals in war-torn country .
Families alerted when one sent a Whatsapp message to sister near border . Lena Abdulqadir said she wanted to ‘ volunteer to help wounded Syrians ' Teenagers born and raised in England and studied medicine in Sudan . Officials believe they have gone to work in hospitals in war-torn country .