Working duration is closely related to age and it was difficult to assess its independent effect on TB infection in our study.
A damage assessment team noted that it was difficult to assess damage done by Hina alone and estimated the total damage from both cyclones at.
It was difficult to assess what they said and what they meant".
Some economists welcomed Mr. Obama's plan, though they said it was difficult to assess without full details.
It was difficult to assess the claims and counterclaims, because Israeli forces were still turning journalists away from Jenin today.
Brad Smith, an analyst Blackmont Capital in Toronto, said it was difficult to assess the amount paid.
Chris Jennings, the health policy coordinator at the White House, said it was difficult to assess the proposal because House Republicans had not yet introduced a bill.
One Western diplomat, citing the delicacy of the subject and speaking anonymously, said it was difficult to assess prospects for peace talks.
Wilks said it was difficult to assess how much money the defendant made from his drug deals given Bitcoin's continued fluctuation.
Still, even Dr. Hartzler said in his paper that it was difficult to assess what impact the decline of Iowa milkweed was having on monarch populations.
Murray, who was disappointed by his failure to extend more of the rallies, said it was difficult to assess Kyrgios' potential.
