“…So, to contribute to the currently limited evidence on impact-oriented HSPR training, it will be important to evaluate their impact at regular intervals, adjust their parameters for continued relevance to employment trends and health system needs and report on lessons learned. The papers in the present issue reflect initial efforts to learn from early experiences with the HSI Fellowship program, including whether and how fellows' enriched core competencies evolved over the course of the first year (see McMahon et al 2019a), what contributions fellows made to their host partner organizations (see Blanchette et al 2019) and the role and value of mentors in embedded research settings (see Bornstein et al 2019). Over time, as the Canadian and US programs expand and evolve, it will be important to investigate questions such as the following: Does hosting a fellow generate spillover effects for an organization' s internal culture of research and continuous learning?…”