United States
Missouri
| Name of Author | Institutional Affiliation |
|---|---|
| Cady R | Headache Care Center, 3805 S. Kansas Expressway, Springfield, MO 65804, USA. |
| Pearlman, Starr H | Ryan Headache Center, 1585 Woodlake Drive, St Louis, MO 63017, USA. |
| Ryan, Robert E Jr | Ryan Headache Center, 1585 Woodlake Drive, St Louis, MO 63017, USA. drrerjr@aol.com |
| Schreiber C | Headache Care Center, 3805 S. Kansas Expressway, Springfield, MO 65804, USA. |
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