• University of Geneva, Switzerland; N. Brochut (PhD Thesis; Prof. P. Baehni); Bacteriological study.
  
  
• Dental Clinic, University of Paris 7, France; Dr. Tarounine.
  
  
• Hygienist Dental School of Geneva, Bern, and Zürich, Switzerland; Control for Final Examination.
  
  
• University of Freiburg, Germany; Dr. Kohal; Implants microbiological study.
  
  
• Heinsberg Clinic, Düsseldorf, Germany; Prof. Zafiropoulos & Prof. Mastrangelopulos; Angiology and Periodontal Bacteria Study.
  
  
• Zhang Xianhua, China; Dental health of Chinese army.
  
  
• University of Geneva, Switzerland; J. J. Kamma (PhD Thesis; Prof. P. Baehni); Five year maintenance follow up of Early Onset Periodontitis patients.
  
  
• Universitary Clinic, Heidelberg, Germany; Dr. Dörfer & Prof. P. Eickholz.
  
  
• University of Geneva, Switzerland; Dr. Ruggia (PhD Thesis; Prof A. Mombelli).
          
• University of Seoul, South Korea; Dr. Dr. Kim; Aa serotyping.
  
  
• University of Hamburg, Germany; Dr. Eichhorn & Dr. Gbana Ali; Implants microbiological study.
  
  
• Dr. Dr. R. Nahas (Dissertation); Bremen, Germany; Laser treatment and bacteria study.
  
  
• University of Geneva, Switzerland; J. J. Kamma & Prof. P. Baehni; Laser treatment (diode; Biolitec) and bacteria study.
  
• Universitary Clinic of Hamburg-Eppendorf; Dr. Dr. H. Ehmann (Dissertation); Pregnant women dental plaque analyses.
  
  
• The Heart Institute, Hadassah University Hospital, Jerusalem, Israel; Dr. A. Stabholz & Dr. Pugatsch; Periodontal diseases and cardiological problems.
  
  
• Sunstar Japan.
  
  
• Private institute for minimal invasive treatment, Tübingen, Germany; Dr. Hahn; Vector systems (laser; Dürr).
  
  
• University of Regensburg, Germany; Prof. M. Christgau; Laser treatment and bacteria study.

• Dr. A. Migliorati; Sao Paolo, Brasil; Laser treatment and bacteria study.

• Sunstar China.
  
  
• Obstetrics & Gynaecology Departments, Bikur Holim Hospital, Jerusalem, Israel; Dr. Schonberger; Semen bacteriological study.

• University of Bern, Switzerland; Dr. Mettraux; Photodynamic therapy.
  
  
• University of Zürich, Switzerland; Dr. Irani & Dr. Schmidlin; Pneumology and Periodontitis study.
  
  
• Goethe University of Frankfurt, Germany; Prof. P. Eickholz; MT vs. Single test (still in progress).
  
  
• University of Greifswald, Germany; Mrs. Missy dissertation (Prof. Hermann & Prof. Kocher); Paper point vs. Curette study (still in progress).
  
  
• Goethe University of Frankfurt, Germany; Prof. P. Eickholz; npCRP study.
  
  
• Goethe University of Frankfurt, Germany; Prof. P. Eickholz; MT4 vs. MT6 study (still in progress).
  
  
  
  
  
  

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