Eligibility: Trainees affiliated with the University of Pennsylvania or Children’s Hospital of Pennsylvania, who are actively involved with health economics and/or health services research. To be considered, you must be a (a) postdoctoral fellow, (b) PhD student, or (c) clinical fellow who is enrolled in a research degree program, e.g., MSHP. Instructors, research associates, and/or affiliates who have completed a research degree are eligible to apply if their appointment is three years or less. Residents are not eligible to apply to the Associate Fellows program. Acceptance into the Associate Fellows program depends on the applicant’s research activities and alignment with LDI’s mission. Applications are reviewed on an ongoing basis. If accepted, Associate Fellows are appointed for the duration of their education or training program and are expected to actively participate in LDI and within the Associate Fellow community.