Green Flags and headache: A concept study using the Delphi method

1. Pohl, H.
2. Do, T.P.
3. García-Azorín, D.
4. Hansen, J.M.
5. Kristoffersen, E.S.
6. Nelson, S.E.
7. Obermann, M.
8. Sandor, P.S.
9. Schankin, C.J.
10. Schytz, H.W.
11. Sinclair, A.
12. Schoonman, G.G.
13. Gantenbein, A.R.