About the Authors

N. B. van Bakelen

n.b.van.bakelen@umcg.nl

Affiliation Department of Oral and Maxillofacial Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands

K. M. Vermeulen

Affiliation Department of Epidemiology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands

G. J. Buijs

Affiliation Department of Oral and Maxillofacial Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands

J. Jansma

Affiliation Department of Oral and Maxillofacial Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands

J. G. A. M. de Visscher

Affiliation Department of Oral and Maxillofacial Surgery, Medical Centre Leeuwarden, Leeuwarden, The Netherlands

Th. J. M. Hoppenreijs

Affiliation Department of Oral and Maxillofacial Surgery, Rijnstate Hospital Arnhem, Arnhem, The Netherlands

J. E. Bergsma

Affiliation Department of Oral and Maxillofacial Surgery, Amphia Hospital Breda, Breda, The Netherlands

B. Stegenga

Affiliations Department of Oral and Maxillofacial Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands, UMCG Center for Dentistry and Oral Hygiene, Department of Oral Health Care & Clinical Epidemiology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands

R. R. M. Bos

Affiliation Department of Oral and Maxillofacial Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: NBvB KMV GJB JJ JGAMdV ThJMH JEB BS RRMB. Performed the experiments: JJ JGAMdV ThJMH JEB RRMB. Analyzed the data: NBvB KMV. Contributed reagents/materials/analysis tools: KMV GJB BS JJ RRMB. Wrote the paper: NBvB KMV GJB JJ JGAMdV ThJMH JEB BS RRMB.