First Online: 8 September 2021
: Ethics approval was not required.
: Not applicable
: The authors declare that they have no competing interests. MW is a staff member of the World Health Organization. The authors alone are responsible for the opinions expressed in this publication and they do not necessarily reflect the policies and positions of the World Health Organization. Funding for the editorial: Not applicable The development of the Pocket Book and related activities were partially funded by the Federal Ministry of Health of Germany and through a grant of the Russian Government.