10.1371/journal.pone.0182748.g001 Huiying Hu Huiying Hu Jing Wang Jing Wang Ming Zhu Ming Zhu The numbers of blood center with or without a working official website. Public Library of Science 2017 study Background Blood collection agencies 350 blood centers official websites blood centers information quality Methods Identified official websites blood donor counselling 2017-08-09 17:46:05 Figure https://plos.figshare.com/articles/figure/The_numbers_of_blood_center_with_or_without_a_working_official_website_/5295928 <p>Numbers within stacked bars show the number of websites within each category.</p>