At least one healthcare-related deal has been undone by the turbulence in the financial markets: Walgreen pulled its offer to acquire Longs Drug Stores, allowing archrival CVS to win the bidding war by default. <a href="http://biz.yahoo.com/rb/081008/business_us_longs_walgreen.html" target="_blank">http://biz.yahoo.com/rb/081008/business_us_longs_walgreen.html</a>