Gulf Cooperation Council-dialysis outcomes and practice patterns study: An overview of anemia management trends at the regional and country specific levels in the Gulf Cooperation... oleh Samra Abouchacra, Ali Obaidli, Saeed M. G. Al-Ghamdi, Jamal Al Wakeel, Issa Al Salmi, Sumaya Al Ghareeb, Mohammad Al Azmi, Mohammed Elsayed, Brian A Bieber, Ronald L Pisoni, GCC-DOPPS 5 Study Group