A helicopter sits in the background as two medical nurses treat a patient outside the entrance to the tent of a nomadic family, Kazakhstan, USSR, 1978. A helicopter sits in the background as two medical nurses treat a patient outside the entrance to the tent of a nomadic family, Kazakhstan, USSR, 1978. Credit: WHO, 1978. Anne-Emanuelle Birn, and Nikolai Krementsov BMJ Glob Health 2018;3:e000992 © Author(s) (or their employer(s)) 2018. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.