The study collected data from the Millennium Cohort Study, a national study of infants born in the UK between 2000-2002.

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By the end of their careers, NFL players may emerge with all sorts of injuries -- chronic pain, arthritis, joints needing replacement, depression, diabetes, heart problems and concussion-related dementia, among others -- so many they have become a cohort ripe for study.

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The researchers looked at data on children featured in the British Cohort Study - a large group of people born in April 1970 - to look at the link between reading and maths scores at age 10, and earnings at ages 30, 34 and 38.

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NicVAX was evaluated in a recent study in the American Journal of Psychiatry, in a small cohort of 11 smokers who smoked an average of 19 cigarettes per day, smoked for an average of 10 years, thereby meeting criteria for nicotine dependence.

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