September 2009 Peer Reviewed Feature Articles Bipolar disorder: focus on depression Philip B Mitchell, Bronwyn Gould Polycystic ovary syndrome. Can we make the diagnosis and management easier? Vicki Nisenblat, Robert J Norman The diagnosis and management of ankylosing spondylitis David Langsford, Jane Zochling Managing risk factors to prevent stroke David W Dunbabin Advertisement Peer Reviewed Regular Series Men's health Vas deferens – vasectomy and reversal David Golovsky Sports medicine Exercise in children with chronic disease Carolyn Broderick Gastroenterology clinic Assessing and managing a patient with Barrett’s oesophagus Brad Kendall Infectious diseases clinic Managing community needlestick injuries Janine Trevillyan, Justin T Denholm, Denis Spelman Advertisement Supplements An update on contraception Advertisement