Competing Interest
The authors have declared that no competing interests exist. Mention of
trade names or commercial products in this publication is solely for the
purpose of providing specific information and does not imply
recommendation or endorsement by the U.S. Department of Agriculture. The
U.S. Department of Agriculture prohibits discrimination in all its
programs and activities on the basis of race, color, national origin,
age, disability, and where applicable, sex, marital status, familial
status, parental status, religion, sexual orientation, genetic
information, political beliefs, reprisal, or because all or part of an
individual’s income is derived from any public assistance program. (Not
all prohibited bases apply to all programs.) Persons with disabilities
who require alternative means for communication of program information
(Braille, large print, audiotape, etc.) should contact USDA’s TARGET
Center at (202) 720-2600 (voice and TDD). To file a complaint of
discrimination, write to USDA, Director, Office of Civil Rights, 1400
Independence Avenue, S.W., Washington, D.C. 20250-9410, or call (800)
795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity
provider and employer.