 Additional study visits will occur at Weeks 1, 2, 4, 8, 12, 18, 24, and 36. They will include a physical examination, blood collection, and adherence assessments; an arm ultrasound test will also be performed at Weeks 12 and 24. At Week 2, some participants will also take part in a pharmacokinetic PK assessment, which will involve undergoing a blood collection several times over a 6-hour period. 