“…The three steps are as follows: (1) identifying evidence by conducting reviews of the relevant literature and carrying out a concept analysis and a qualitative study; (2) identifying/developing a theory-in this case, putting forward a preliminary Endurance with Partnership Conceptual Framework (P-EPCF) for couples undergoing IVF treatment; and (3) modelling the process and outcomes of the PCEP. It should be noted that the literature reviews [1,3,21], the concept analysis [25] and the qualitative study [26] have been published, and that the preliminary Endurance with Partnership Conceptual Framework (P-EPCF) [27] has been developed and is under review for publication. The key findings of these reviews and the studies that contributed to the development of this complex intervention are recaptured and presented in this report.…”