 In May 2010, Brian Boyarsky sought out Segev's advice after doing previous research comparing transplant programs in different countries.During his research, Boyarsky met Elmi Muller, who had been successfully transplanting organs between HIV+ donors and recipients in South Africa.With that in mind, Segev and Boyarsky looked at both the Nationwide Inpatient Sample to study in-hospital deaths of HIV+ patients and the HIV Research Network, which provided granular disease-specific data, to calculate the impact of using organs from HIV+ donors on the organ transplant waitlist.