That is an implication of unpublished research using macaque monkeys by Doris Tsao and Winrich Freiwald, of the University of Bremen, in Germany.

ECONOMIST: Facial characteristics

Not so, says Lothar Probst of the University of Bremen.

ECONOMIST: Germany��s Green party is flourishing

The FDP plan would mark a decided shift toward a "two-class health-care system, " warns Gerd Glaeske, director of health economics and policy at the University of Bremen's Center for Social Policy Research.

WSJ: Germany Strains to Fund Health Care for All

"We expect a tremendous nursing shortage of about 500, 000 people by 2030, " said Professor Stefan Goerres, managing director of the Institute for Public Health and Health Care Research at the University of Bremen.

CNN: Where have Europe's nurses gone?

The latest controversy surrounding Germany's charismatic defence minister emerged when a Bremen University law professor began writing a review of the dissertation which was published two years ago, with the aid of internet search engines.

BBC: German minister denies plagiarism on PhD thesis

But he came under pressure after a Bremen University law professor began reviewing his thesis with the aid of the internet.

BBC: Germany's Guttenberg 'deliberately' plagiarised

He came under pressure after a Bremen University law professor began reviewing his 2006 thesis with the aid of the internet.

BBC: German Defence Minister Guttenberg resigns over thesis