 In this DCE-Q respondents will be asked to choose between choice sets developed to represent the hypothetical but realistic fertility treatments based on AGs. The fertility treatments will be described by a number attributes that can each vary across a number of levels e.g. pregnancy rate varying between 20 and 35. The attributes will be the valued treatment characteristics identified by the preparatory qualitative study in couples and physicians. The levels over which the attributes can vary in the description of the hypothetical fertility treatments will reflect a range realistic for current MAR and future MAR with AGs Hendriks et al, submitted. 