Comparison of the Second to Fourth Finger Ratio (2D:4D) and Autism Scores in Patients with Acne Vulgaris with Healthy Controls January 2020 in “ AYBU AVESIS ” Sezin Ünlü Açıkel 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 avesis.aybu.edu.tr →