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1. Sebastian Fernandez-Bussy, M.D. - Doctors and Medical Staff - Mayo Clinic

   IV/AIDS Medicine, Division of Infectious Diseases University of Texas - Houston 2002 Fellowship - Critical Care Medicine Universidad del Salvador 2000 Residency Internal Medicine Society of Buenos Aires 1997 MD Salvador University School of Medicine ...

2. Smokers' Brains Change in Response to High Levels of Nicotine - Mayo Clinic News Network

   In addition, low�levels of nicotine lead to symptoms of nicotine withdrawal, such as strong cravings for a cigarette, anxiety, irritability, restlessness, difficulty concentrating, depressed mood, frustration, anger, increased hunger...