Sue Hawkins and Andrea Tanner describe a ground-breaking Web site using children's hospital admission registers. <a href="/issue60">issue60</a> July 2009 <a href="/category/article-type/feature-article">feature article</a> <a href="/taxonomy/term/122/author-info">andrea tanner</a>, <a href="/taxonomy/term/121/author-info">sue hawkins</a>