Institutional Review Board (IRB) approval is valid for a maximum period of one year, with limited exceptions specified in the Human Research Protection Program (HRPP) Manual Section 8-8, âDemonstration Projects.â The approval period will be listed on approval letters sent to researchers, including both the approval date and the expiration date.
Operational Hours: This number is valid from 7am to 10pm within your local time zone. IRS Phone Number for Taxpayers Living Abroad (International) â If you are calling about an issue with filing electronically contact the Austin Office at 512-416-7550 (7am to 6pm CST)..
To contact the IRS, call: 1  Customer service -- 800-829-1040. 2  Lost IRS check -- 800-829-1954. 3  Refund status -- 800-829-4477.  Forms and publications -- 800-829- 1 3676. Questions about refunds and offsets to IRS liabilities -- 800-829-1954.  Taxpayer advocate service -- 877-777-4778.