Conversely, No Fault or Negligence would not apply in the following circumstances: (a) a positive test resulting from a mislabeled or contaminated vitamin or nutritional supplement (Athletes are responsible for what they ingest (Article  2.1) and have been warned against the possi bility of supplement contamination); (b) the Administration of a Prohibited Substance by the Athlete’s personal physician or trainer without disclosure to the Athlete (Athletes are responsible for their choice of medical personn el and for advising medical personnel that they cannot be given any Prohibited Substance); and (c) sabotage of the Athlete’s food or drink by a spouse, coach or other Person within the Athlete’s circle of associates (Athletes are responsible for what  they ingest and for the conduct o f those Persons to whom they entrust access to their food and drink).