Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Mutually exclusive groups created for this study. Euler diagram depicts all participants with a headache and all participants with a painful TMD. The groups of headache comorbid with TMD and headache attributed to TMD are situated within the headache without TMD group, in order to illustrate the study sample of interest. The TMD without headache group is not included in the present analyses.
