Drupal-Bibcite0<style face="normal" font="default" size="100%">Contact structure and potential risk factors for avian influenza transmission among open-sided chicken farms in Kamalia, an important poultry rearing area of Pakistan</style><style face="normal" font="default" size="100%">Contact structure and potential risk factors for avian influenza transmission among open-sided chicken farms in Kamalia, an important poultry rearing area of Pakistan</style>