Ethel Weld, MD
- Protocol chair, IMPAACT 2005
- Protocol vice-chair, IMPAACT 2022
- Member, Clinical Pharmacology Advisory Group of the ACTG Laboratory Steering Committee (2018-Present)
- Member, ACTG Antiretroviral Therapy Strategies Transformative Science Group Less Frequent Dosing ART Working Group
- Member, Pharmacology Core, HPTN Laboratory Core
- Member, TB in Pregnancy Working Group
- Protocol pharmacologist for HPTN 086, IMPAACT CAP 544, IMPAACT CAP 543