Fig. 4From: The management and clinical knowledge of headache disorders among general practitioners in Norway: a questionnaire surveyGPs’ ranking of the main barriers to optimised treatment and management of headache patients, scored on a scale of 1–6. The most important barrier is ranked from right to left as 1 (blue) and the least important as 6 (orange). The corresponding colours to score 2, 3, 4 and 5 are red, green, purple and turquoise, respectively. Numbers denote %Back to article page