Stringhalt to three years. Horses may be affected so severely that euthanasia is necessary. It is unknown how long it takes for clinical signs to develop after the exposure to the cause of the condition. The majority of horses affected by stringhalt are dependent upon pasture for nutrition. Removal of the horse from its original paddock containing low-quality pasture, weeds and native grasses, along with dietary control, was the most common and successful treatment. Lateral digital extensor tenectomy has also been used as a treatment by veterinarians with a success rate of just over 50%. Phenytoin has been used in the
Which? supplement, which becomes "Motoring Which?" in 1965, followed by "Money Which?" in 1968. In 1970, "Which?" bought a set of buildings in Harpenden, Hertfordshire, to set up labs to test products including domestic appliances, DIY equipment, and consumer electronics. Previously, the work had been contracted out. The 1970s saw "Which?" taking a greater campaigning role, and it began to adopt a more aggressive stance on issues such as lead poisoning and aircraft noise. In 1971, for example, "Which?" published the first league table on the tar and nicotine content of cigarettes. The organisation also dabbled in high street consumer advice