About Aphthous Ulcer: These small sensitive painful craters in the mouth are common canker sores. There are many possible causes of apthous ulcers and frequently the cause is unknown. See also: sub-topics
The IRS phone number for individuals is (800) 829-1040. Businesses can call (800) 829-4933. Hearing impaired individuals can contact the IRS using TDD at (800) 829-4059. Operating hours are between 7 a.m. and 10 p.m. in your local time zone. After hours, a recording will direct you. Have all your paperwork in front of you when you call.
GENERAL INFORMATION FOR VISITORS. Hours of Operation: Winter: 08:30 - 15:00. Summer: Daily: 08:00 - 19:30. Holiday Hours: - Good Friday (Orthodox): until 12:00 closed. - Easter Saturday: 08:30-15:00. - May 1st: closed.