Since the founding, every person who presented at one of the five Conjoint Analysis in Healthcare Conferences (CAHC) was sent an email request to discuss their interest in receiving a founding membership invitation to IAHPR. Among those who expressed interest, 47 invitations were sent on 21 March 2014. Membership applications will be accepted and processed until 15 April 2014, after which no more members will be registered. A list of founding members will be posted to the IAHPR website.