| http://www.w3.org/ns/prov#value | - the stress-reactivity study that are known to affect the immune system, including coffee and alcohol consumption, number of cigarettes smoked, prescription drug use, amount of exercise that day, and hours of sleep the previous night.Stress Task ProtocolBaseline assessments Laboratory visits were scheduled for the afternoon between 2:30 and 4:30 PM to minimize variability due to the circadian rhyth
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