DOCTORAL DISSERTATION ; 1 GULF MIGRATION; 1 HEALTH CARE MARKET; 1 HEALTH CARE TRANSITION; 1 HEALTH SECTOR REFORM; 1 KNOWLEDGE ECONOMY; 1 MEDICAL PLURALISM; 1 MEDICAL PROFESSION; 1 PRIVATE HEALTH CARE SYSTEM 1 Ph.D THESIS; 1 SCANNING; 1 WESTERN MEDICINE - HISTORY;