A study to assess the relationship between female pattern hair loss and levels of serum 25 Hydroxyvitamin D and ferritin January 2023 in “International journal of dermatology, venereology and leprosy sciences” We don't know much about this study yet. We're trying to become 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 dermatologypaper.com → https://doi.org/10.33545/26649411.2023.v6.i1a.132