A clinical evaluation of amlexanox oral adhesive pellicles in the treatment of recurrent aphthous stomatitis and comparison with amlexanox oral tablets:a randomized, placebo controlled, blinded, multicenter clinical trial.
In addition to accessing the Form 656 and Form 656-L online, you may obtain it by calling the IRS toll free number 1-800-829-3676 or by visiting your local IRS office. This entry was posted in IRS Tax Advice, Tax News. Bookmark the permalink.
Call the IRS toll-free number (800) 829-1040. Related Resources. 1  Treasury Offset Program Call Center. ( 2 800) 304-3107, or for International Calls click here. 3  Internal Revenue Service. ( 4 800) 829-1040. 5  IRS Form 8379.