Researchers at the university of bristol began with a database of children born from 1991 to 1992 who were enrolled in a long-term study in avon , england .
It was five years before avon , mary kay and others were allowed to operate again .
过了5年,雅芳(avon)、玫琳凯(marykay)等公司才再次获准经营。
Pembrey 's evidence for the effects of smoking comes from the avon longitudinal study of parents and children .
pembrey关于吸烟影响的证明来自关于父母与儿女的avon纵向研究。
Some problems are beyond avon 's control .
有些问题是雅芳无法控制的。
Pembrey and his colleagues examined whether there was any connection between when a father had begun smoking and his children 's weight at age 9 , a measurement included in the avon study .