They were then divided into two groups: the first was to undergo three sessions of HIT a week, for two-weeks, while the second acted as a control group.
The result was that three-quarters of the treated group did not relapse into depression: a success rate twice as high as that of the 20 patients in the control group, who received a placebo regimen.
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Seven of the 23 acted as a control group, and received no intervention from Dr Bolli after the surgery.
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Patients on this vegetarian diet for four weeks reduced their bad cholesterol levels just as much as a control group on Merck's Mevacor.
Working with 400 school children aged between nine and 11, the team assigned whole classrooms either to perform and note down three kind acts per week or - as a control group - to keep a diary of three locations they visited each week.
Neither company will comment on its work, but Pfizer recently published an animal study showing that a leukotriene blocker called CP-105, 696 shrank artery plaques dramatically in mice that were fed the compound for 35 days, as compared with a control group that didn't get the compound.
The study, which examined insurance records for more than 2, 500 diabetics between February 2005 and December 2008, found that patients hospitalized with pancreatitis were twice as likely to be taking one of these drugs, as opposed to a control group of Type 2 diabetics who did not have pancreatitis.
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For example, one of the most widely cited intervention studies on soda and weight, ( Ebbeling et al. 2006) took 103 adolescents aged 13 to 18 who regularly consumed soda and randomly assigned them to either a group that received no calorie beverages for six months by way of home delivery or a control group that carried on drinking soda as normal.
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The third group, which acted as a second type of control, were released without any marking.
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Last week, two studies from Sweden found that one hour a week of hypnotherapy for 12 weeks eased symptoms of irritable-bowel syndrome in 40% of patients (compared with 12% in a control group) and that the positive effects can last as long as seven years.
He said they were killed by members of Colombia's main rebel group, the Farc, as part of a dispute over control of an important drug route to Venezuela.
Twenty had relapsing remitting MS, 15 had secondary progressive MS, and five had primary progressive MS. Researchers also recruited 15 healthy control patients free from ophthalmological or neurological disease as a comparison group.
The researchers found that, as a whole, the WoW group saw a greater increase in cognitive performance than the control group, though improvements tended to vary on a person-to-person basis.
As with the field experiment, some participants were placed in a control group, others engaged in activities that stressed individuality (creating personalized nametags, for example), and some focused on the identity of the organization (such as creating a logo for the research lab).
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Although the NRA is ostensibly an organisation seeking to protect the civil rights of its 4m members, critics such as the Violence Policy Centre (VPC), a gun-control group, contend that the level of funding from firearms manufacturers makes it, in effect, just a trade association for the gun industry.
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The move gives the French group control of a raft of businesses from radar and sonar, to internet services, as well as Racal's 22% stake in the UK's National Lottery operator Camelot.
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