1Department of Oral Medicine, Faculty of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
2Department of Pediatric Dentistry, Faculty of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
3Department of Microbiology, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
4Department of Oral Medicine, Faculty of Dentistry, Qazvin University of Medical Sciences, Qazvin, Iran.
5General Practitioner, Faculty of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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