Before revision: In addition to the original MeSH termsMedical Subject Headings , four specific areas were developed: Public Health (1987), Homeopathy (1991), Health Surveillance (2005), and Science and Health (2005).
After revision: In addition to the original MeSH terms,Medical Subject Headings four specific areas were developed: Public Health (1987), Homeopathy (1991), Health Surveillance (2005), and Science and Health (2005).