<qa>  What is the amount of Lipitor given to participants during the 7-month visit?- Placebo group: Participants are given 40 mg of Lipitor for 3 months months 5-7 and seen by a physician once a month during that time. Blood is drawn at the 7-month visit and then participants are referred back to their physicians. During months 8, 9 and 10, participants are called once a month to check on their health. Participation ends after the tenth month. 