US STOCKS-Wall St falls as Greece concerns weigh
* ECB's governing council to hold call this afternoon
* Aetna falls after Humana deal
* All 30 Dow components in the red
* Energy index leads losses as oil prices fall
* Indexes down: Dow 0.72 pct, S&P 0.67 pct, Nasdaq 0.69 pct (Updates to open)
By Tanya Agrawal
July 6 (Reuters) - U.S. stocks fell in early trading on Monday after Greeks overwhelmingly rejected conditions of a rescue package from creditors, throwing the future of the country's euro zone membership into further doubt.
Stock markets globally fell, but analysts said the declines were less than expected due to expectations that the European Central Bank would act to limit any damage.
The ECB's governing council is due to hold a conference call on Monday afternoon to discuss the provision of emergency funding to Greece's banks. The call was originally to be held at noon. A new bailout deal is needed for Greece to meet a July 20 deadline to repay $3.9 billion of bonds to the ECB. Continuación...