GE Tietjen, A Conway, C Utley, WT Gunning, NA Herial. Migraine Is Associated With Menorrhagia and Endometriosis. Headache. 2006;46:422-428.

In the original publication of this article, there are two errors:

Anita Conway's correct academic degree is MD.

On page 425, the P value for rectal bleeding is incorrectly noted as .006. The corrected sentence is as follows:

Comparison of bleeding history between the two groups indicated that high proportion of women with migraine had a history of bruising (P < .001), rectal bleeding (P= .017), and excessive bleeding due to minor trauma (P= .003) (Table 3).