[http://www.cabdirect.org/search.html?q=%28%28od%3A%28sheep%29%29+OR+%28od%3A%28cattle%29%29+OR+%28od%3A%28goats%29%29+OR+%28od%3A%28pigs%29%29%29+AND+%28%28title%3A%28%22Clostridium+difficile%22%29%29%29 ''C. difficile'' in farm animals publications] | [http://www.cabdirect.org/search.html?q=%28%28od%3A%28sheep%29%29+OR+%28od%3A%28cattle%29%29+OR+%28od%3A%28goats%29%29+OR+%28od%3A%28pigs%29%29%29+AND+%28%28title%3A%28%22Clostridium+difficile%22%29%29%29 ''C. difficile'' in farm animals publications] |