Hypertension

• First People's Hospital of Fuyang City — Fuyang, Anhui, China
• China Meitan General Hospital — Beijing, Beijing Municipality, China
• CHINA-JAPAN Friendship Hospital — Beijing, Beijing Municipality, China
• Fu Xing Hospital Affiliated to Capital Medical University — Beijing, Beijing Municipality, China

• Godstrup Hospital — Herning, Denmark

• Pfizer Investigational Site — Algiers, Algeria
• Pfizer Investigational Site — Bejaja, Algeria
• Pfizer Investigational Site — Djelfa, Algeria
• Pfizer Investigational Site — Laghouat, Algeria

Not specified

• Brigham and Women's Hospital; — Boston, Massachusetts, United States

• Clinical Nutrition Research Center — Chicago, Illinois, United States

• Pfizer Investigational Site — Kasuya-gun, Fujuoka, Japan
• Pfizer Investigational Site — Chikushino-shi, Fukuoka, Japan
• Pfizer Investigational Site — Kitakyushu, Fukuoka, Japan
• Pfizer Investigational Site — Koga, Fukuoka, Japan

• Cardiology, PC — Birmingham, Alabama, United States
• Cedars - Sinai Medical Center — Los Angeles, California, United States
• Mount Sinai Medical Center — Miami Beach, Florida, United States
• Cardiovascular Institute of the South — Houma, Louisiana, United States

• Pfizer Investigational Site — Birmingham, Alabama, United States
• Pfizer Investigational Site — Birmingham, Alabama, United States
• Pfizer Investigational Site — Birmingham, Alabama, United States
• Pfizer Investigational Site — Mesa, Arizona, United States

• College of Kinesiology, University of Saskatchewan — Saskatoon, Saskatchewan, Canada