These are preliminary guidelines. They were first developed internally by KIT epidemiologists and were then presented to global health experts from all over the world for validation through a Delphi consultation process.

We are currently preparing a manuscript summarising the methodology followed and the resulting guidelines.

You are free to use these guidelines and we welcome feedback from all interested epidemiologists and researchers. For any queries or comments contact Daniel Jeannetot (d.jeannetot@kit.nl), Masja Straetemans (m.straetemans@kit. nl) or Sandra Alba (s.alba@kit.nl).