<p>In related news, the number of new shortages of critical drugs to treat cancer and other illnesses has fallen by more than 50% compared with last year, FDA Commissioner Margaret Hamburg <a href=http://blogs.fda.gov/fdavoice/index.php/2012/05/six-month-check-up-fdas-work-on-drug-shortages/ target=_blank>said on Thursday</a>, <a href=http://www.reuters.com/article/2012/05/03/us-fda-shortages