Feasibility of a positive psychology intervention (PATH) in allogeneic hematopoietic stem cell transplantation survivors: Randomized pilot trial design and methods.

If the PATH intervention is feasible, a larger randomized, controlled efficacy trial will be indicated. Additionally, we anticipate that the results from this RCT will guide the development of other clinical trials and larger efficacy studies of positive psychology (PP) interventions in vulnerable oncological populations beyond HSCT.