Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Double Blind, Randomized, Placebo Controlled, Study for Assessment of Dietary Flaxseed on Improving Symptoms of Cardiovascular Disease in Patients With Peripheral Arterial Disease
Brief Summary: This Clinical Trial is being conducted to study how patients with peripheral arterial disease (a condition in which the blood vessels of the extremities are affected) respond to a dietary regimen of flaxseed. The purpose of the study is to examine whether or not dietary flaxseed have any effect on improving symptoms of cardiovascular disease. Additionally, the effects of dietary flaxseed on exercise tolerance will be assessed.


Options:
A: Inclusion Criteria:

* Men and women between the ages of 50 and 85 years
* Macular status ranges from large drusen in both eyes or large drusen in one eye and advanced AMD (neovascular AMD or geographic atrophy) in the fellow eye

Exclusion Criteria:

* Ocular media not clear enough to allow good fundus photography
B: Inclusion Criteria:

* persistent Atrial Fibrillation (AF) lasting \> one month
* history of at least one AF relapse after previous electrical or Pharmacological cardioversion

Exclusion Criteria:

* left atrium size \> 6 cm
* severe valvulopathy
* myocardial infarction during the previous 6 months
* unstable angina
* NYHA heart failure class IV or hemodynamic instability
* cardiac surgery during the previous 3 months
* significant pulmonary thyroid and hepatic disease
* contraindications to treatment with amiodarone or RASS inhibitors
* chronic renal dysfunction
* QT \> 480 msec in the absence of bundle-branch block
* bradycardia \< 50 b/min
* diagnosis of paroxysmal AF
* hyperkalemia
* pregnancy
* any disease or other medical treatment that, in the opinion of the investigators, could interfere with the study.
C: Inclusion Criteria:

* 63 to 79 years old
* healthy men and women
* able to attend clinic at a study sites

Exclusion Criteria:

* illiteracy or inability to understand the protocol
* unable to undergo neurophysiological tests
* morbid obesity (BMI greater than or equal to ≥ 40 kg/m2)
* uncontrolled diabetes (HbA1c\>85)
* uncontrolled hypertension
* prior cerebrovascular accident
* any relevant psychiatric illness, including major depression
* advanced cognitive deterioration, dementia
* other neurodegenerative diseases (i.e. Parkinson's disease)
* any chronic illness expected to shorten survival (heart, liver, cancer, etc)
* bereavement in the first year of loss
* bad dentures unless fixable dental prostheses are used
* allergy to walnuts
* customary us of fish oil or flaxseed oil supplements
* eye related exclusion criteria
D: Inclusion Criteria:

* Subjects with peripheral arterial disease for more than 6 months.
* Male or female with claudication secondary to lower extremity atherosclerotic arterial disease. (with limited IC but not incapacitated for walking on the level) confirmed with ankle/brachial pressures\< or = to 0.9 in one or both legs) or who have had a previous intervention for peripheral arterial disease.
* Over 40 years old
* Able to comply with protocol requirements
* Able to provide informed consent
* Subjects taking anti-platelet therapy medication must be on a stable dose for 3 months prior to as well as during the study.
* Subjects taking lipid lowering medication must be on a stable dose for 3 months prior to as well as during the study.

Exclusion Criteria:

* Patients with ischemic rest pain in limbs, ulceration, or gangrene.
* At baseline, any condition that prevents walking on a treadmill.
* History of major bleeding.
* Patients with bowel disease (including Crohn's disease, celiac disease, peptic ulcer disease, irritable bowel syndrome and diverticulosis).
* Patients with an estimated life expectancy less than 2 years and with high baseline cardiac risk (post ischemic or diabetic cardiomyopathy with EF\<40%, Canadian Cardiovascular Society Class 3 or 4 angina or need for coronary revascularization procedures).
* Moderate to severe renal failure.
* Subjects that are on supplements other that those prescribed by their clinician for the entire duration of the study.
* Fish limitations (no more than 2 fish meals per week)
* Gluten allergy
* Subjects with allergies to any ingredient in the study product or placebo.
* Patients who plan to undergo surgery during the course of the trial.

Answer: D