Letters to the Editors: Re: Hair Restoration Surgery Is Not the Airline Industry September 2009 in “ Hair transplant forum international ” Konstantinos Giotis We don't know much about this study yet. We're maintaining the world's largest resposity of hair loss research. You can help out the community by sending a PDF of this study here . Not sure how to get a study's PDF? You can email the authors of the study. View this study on ishrs-htforum.org →