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Item 3.
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Incorporation of Documents by Reference.
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The following documents
previously filed by the Registrant with the Commission are incorporated herein by reference and shall be deemed to be a part hereof:
(1) The Registrant’s Annual Report on Form 10-K for the year ended December 31, 2019, filed with the Commission on February 25, 2020;
(2) The Registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2020, filed with the Commission on August 5, 2020;
(3) The
Registrant’s Current Reports on Form 8-K filed with the Commission on the following dates in 2020: January
14, February
5, February
27, March
30, April
2, April
10, April
21, April
29, May
12, May
15, May
18, May
22, May
28, May
29, June
8, July
29, and August
3, (provided that any portions of such reports that are deemed furnished and not filed pursuant to instructions to Form
8-K shall not be incorporated by reference into this Registration Statement); and
(4) The
description of the Registrant’s Common Stock under the heading “Description of Common Stock” contained in the
Registration Statement on Form S-3 (Registration No. 333-132626) as originally filed by the Registrant with the Commission under
the Securities Act on March 22, 2006, including any reports filed that updated such description.
In addition, all documents
that the Registrant files pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act subsequent to the effective date
of this Registration Statement (except for any portions of the Registrant’s Current Reports on Form 8-K furnished pursuant
to Item 2.02 or Item 7.01 thereof and any corresponding exhibits thereto not filed with the Commission), but prior to the filing
of a post-effective amendment to this Registration Statement indicating that all securities offered hereby have been sold or which
deregisters all securities then remaining unsold shall be deemed to be incorporated by reference in this Registration Statement
and to be a part hereof from the date of filing such documents.
For purposes of this
Registration Statement, any document or statement contained in a document incorporated or deemed to be incorporated by reference
herein shall be deemed to be modified or superseded to the extent that a statement contained herein or in any other subsequently
filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes such document or statement
in such document. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute
a part of this Registration Statement.