61.   But if there is a problem, partners need to rule out first any possible physiological causes.

62.   But Lawrence acknowledged that there could be several possible causes for the crash.

63.   But officials said the medical examiner ruled out blunt force trauma as a possible cause and found no evidence of kicking, beating or strangulation.

64.   But it was the first time the Pentagon acknowledged a possible cause after years of ruling out others, including gas attacks.

65.   But the additive has been found to be a possible cause of cancer and other health problems in humans.

66.   But the rise is fueling an unprecedented concern over the best way to help children with autism, as well as intensified research into possible causes and cures.

67.   Campolo did, however, dispute a Star-Ledger report that investigators had eliminated careless smoking and faulty electrical wiring as possible causes.

68.   Cancer, according to Terry and Dee Soles, was never mentioned by the scores of doctors who saw him as a possible cause of his continuing problems.

69.   Dash asked, checking possible natural causes of anthrax.

70.   Doctors are now expected to consider anthrax as a possible cause for the thousands of skin lesions and flu-like symptoms they encounter every day.