The first study is on television advertising by Kristin Harrison from the University of Illinois.
The recent Swedish study described here is not the first study to connect vitamin C and kidney stones.
"Ours is the first study to have been carried out in the UK and the results are worrying, " he said.
This suggested that what participants had reported about themselves in the first study accurately reflected how prayer affected their romances.
In 2003, the Centers for Disease Control conducted its first study of wireless only homes and found 3% had dropped the landline.
In the first study they found that it took place in 36 out of the 37 developed and emerging markets they examined.
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More studies will now be carried out, looking at the gene's effect on women, and seeing if this first study's results are replicated.
It will be the first study looking at the spread of flu by directly infecting volunteers and sitting back to see what happens.
The first study to investigate the question of whether people can actually die of heartbreak was published in the British Medical Journal in 1969.
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The first study focused on a treatment for critical limb ischemia, or severe blockage in the arteries of the lower legs and feet of elderly patients.
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At almost the same time, results of the first study to actually show a benefit on heart attacks and strokes were published in The Lancet.
However, this is the first study to film and observe an ape shaking its head in a negative context to stop or prevent other bonobo behaviour.
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This was the first study to investigate Tekturna for more than one year in a specific population of patients with type 2 diabetes and renal impairment.
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In the first study to test the effects of playing violent video games over time, researchers found that cumulative play results in increased hostility and aggression.
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The University of Tromso team who carried out the research say it is the first study to show women who smoke less than men still get more colon cancer.
According to Strathearn, who was not involved in the study, this is the first study to demonstrate that a mother's voice, rather than touch, can measurably raise levels of oxytocin.
The first study, published in the Journal of the American Medical Association Tuesday, counters doctors' typical advice that women should gain at least 25 pounds during the course of their pregnancies.
The first study deals with six major energy-intensive industries.
Dendreon's first study showed efficacy only in less-sick patients.
Still, this is not the first study to suggest that weight-loss surgery does not reduce cancer risk in men, and it's possible that hormonal differences between the sexes may play a role.
Now, the first study of its kind has found that most are psychologically healthy, though they're at "slightly increased risk" for behavioral problems such as attention deficit hyperactivity disorder or oppositional defiant disorder.
In the first study at Stanford University, a man who received his brother's kidney has gone for two years without drugs after his doctors tweaked his immune system with irradiation and antibody treatments.
John Neate, chief executive of The Prostate Cancer Charity, said it was not the first study looking at vitamin D in the disease but a consensus on the benefits had not been reached.
"There's a lot of research that has been going on, but this is the first study that has conducted the phylogenetic approach to measure these acoustics and relate them to one another, " Dr Davila-Ross.
In the first study, Dr. Prahbat Jha and colleagues sought to answer how serious the smoking problem remains today and how effective smoking cessation programs have been on health in the years after quitting.
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In the first study, published in the journal Neurology, Dr. Kurth and his colleagues looked at 27, 798 female health professionals ages 45 and older, including 3, 568 who had migraines, from the Women's Health Study.
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The first study - involving more than 68, 000 infants aged six to 12 weeks - found a vaccine called Rotateq being developed by the pharmaceutical company Merck could safely prevent 98% of severe cases of viral diarrhoea and vomiting.
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