The field is complicated by the fact that gluten-sensitivity diagnosis and treatment is often patient-driven.
Obama's task in choosing a Treasury secretary is complicated by the situation on Wall Street.
The role of women is changing in society and the picture is complicated by domestic violence.
The task is complicated by the fact that there isn't one monolithic polar bear population.
The design of cyberwar-fighting rules is complicated by the extent to which computer networks are globally interconnected.
The picture is complicated by the differences between the two main house-price indices, compiled by leading lenders.
We understand that this is complicated by events, as has been the case at various times this year.
Design of the stolen-phone database is complicated by the fact that the carriers use very different cellphone technologies.
WSJ: U.S. Government, Carriers Plan a National Database of Stolen Cellphones
The Working Group also targeted services, the regulation of which is complicated by history, culture, and local practice.
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The legal theory is complicated by the fact, as Judge Woodcock noted, that both types of cigarettes cost the same.
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Answering this question is complicated by an unfortunate history of public-private co-operation in this area that makes drugs firms especially cautious.
Planning is complicated by the fact that the far-flung sprawl of the population makes it difficult to develop any cohesive blueprint.
Co-ordination is complicated by the large numbers of charities and individuals involved.
But the issue of corporate ownership is complicated by the ability of some investors to control more votes than the shares they own.
Whether Microsoft ever intends to translate that into a Smart TV platform is unknown, especially since the migration is complicated by the gaming element.
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So if the "assist" statistic is complicated by all of these other factors, what is the real significance of Williams' reaching the 5, 000-assist plateau?
BTW, league parity within the NHL and MLB is complicated by how much teams must rely on farm teams and talent development for long-term success.
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The WTO situation is complicated by the fact that on many trade issues the EU has sole competence to negotiate for the fifteen member states.
Work on a vaccine is complicated by dengue's different forms, and it is thought unlikely that one will be available for at least five years.
Creating jobs is complicated by the failure of previous employment laws.
Correspondents say the security situation in Yemen is complicated by an abundance of firearms, an insurgency in the north and a secessionist movement in the south.
BBC: Yemen instability poses a 'global threat', says Clinton
The task of delivering a satisfactory service is complicated by the split between track and train operations with both sides blaming one another for poor performance.
The trial is complicated by suspicions that individuals working for some of its customers, and perhaps even for its insurers, were accessories to the fraud as well.
But in Japan the situation is complicated by the fact that all political leaders are loath to reveal the true state of their health to the public.
But that isn't likely now because any settlement of the tax probe is complicated by U.S. negotiations with Swiss authorities over U.S. demands for access to client information.
But it is complicated by the incidence of corporate taxation.
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The issue is complicated by the fact that there is no single law dealing with archaeology in the West Bank, but rather a series of conventions, inherited laws and treaties.
But, as Kirchhoff described to me in an interview last week, the problem is complicated by the fact that there are multiple systems at play that impact what we eat.
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