The HSR&D Pain & Opioid CORE is offering methods advisory sessions for VA researchers who are planning analyses or grant submissions related to understanding heterogeneity of treatment effects (HTE). The overall objectives of these sessions are to enable HSR&D investigators to rigorously examine HTE in their existing pain and opioid focused data, support inclusion of HTE analysis plans in new HSR&D proposals and provide a learning environment for HTE methods through engagement of leading methodologists. Researchers interested in applying for an advisory session to discuss their work should email Kelli Allen (kelli.allen@va.gov) and Brian Coleman (brian.coleman2@va.gov).