- History of severe cardiovascular, respiratory, urogenital, gastrointestinal/ hepatic, hematological/immunologic, head, ears, eyes, nose, throat (HEENT), dermatological/connective tissue, musculoskeletal, metabolic/nutritional, endocrine, neurological diseases, allergy, major surgery and/or laboratory assessments which might limit participation in or completion of the study protocol. - Use of medication, including vitamin supplementation, except oral contraceptives, within 14 days prior to testing