Coca-Cola Sees 2nd-Half Below Estimates  CHICAGO (Reuters) - Coca-Cola Co. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=KO.N target=/stocks/quickinfo/fullquote"&gt;KO.N&lt;/A&gt; on Wednesday said  earnings for the remainder of 2004 would lag current  expectations because of weakness in key markets.