Periodontitis

• Institute for Inflammation Research, Center for Rheumatology and Spine Diseases, Rigshospitalet, Copenhagen University Hospital. — Copenhagen, Denmark
• Section for Periodontology, Microbiology and Community Dentistry, Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen — Copenhagen, Denmark

• Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University — Ratchathewi, Bangkok, Thailand
• Department of Medicine, Rajavithi Hospital — Ratchathewi, Bangkok, Thailand
• Mahidol University Faculty of Dentistry — Ratchathewi, Bangkok, Thailand

• Gazi University — Ankara, Cankaya, Turkey (Türkiye)

• Magda Mensi — Brescia, Lombardy, Italy

• Maha Abdelkawy, Phd — Cairo, Egypt

• Gaziosmanpasa University — Tokat Province, Turkey (Türkiye)

• Faculty of Dentistry, The University of Hong Kong — Hong Kong

Not specified

• Recep Tayyip Erdoğan University — Rize, Turkey (Türkiye)

Not specified