1.   But other factors complicate the picture.

2.   Domestic economic factors further complicated this gloomy picture.

3.   It is largely this lag that initiates demographic transition but other factors undoubtedly complicate the picture.

4.   Authorities say two factors complicate making arrests for driving under the influence of drugs other than alcohol.

5.   However, the picture could be complicated by factors unique to each country.

6.   Other factors could complicate the formula, including four rounds of playoffs with a maximum of seven games each round.

7.   Other factors complicate the choice.

8.   Several factors complicated the case, police spokesman David Tull said.

9.   Several factors complicate the case.