What explains very poor Yelp reviews of oral and maxillofacial surgeons in private practice?

Websites that maintain online physician ratings, such as Yelp.com, have been growing in popularity throughout the United States. The purpose of this study was to determine which factors increase the risk for very poor reviews (1 out of 5 stars) on Yelp.com for oral and maxillofacial surgeons (OMSs) in private practice.
Source: Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics - Category: ENT & OMF Authors: Source Type: research