该研究作者建议，老年肾衰竭患者治疗时应首选移植疗法。
Elderly kidney failure patients should consider transplantation over other types of treatment, suggested the study authors.
该研究的领头作者、生态学家帕特里克·麦克伦泰尔表示：“许多因素导致了这种下降。”
"Many factors contributed to the decline", said Patrick McIntyre, an ecologist who was the lead author of the study.
该研究的作者调查了12395名学生并分析了九种危险行为，包括过度使用酒精、非法使用毒品、大量吸烟、频繁使用媒体和逃学。
The study's authors surveyed 12,395 students and analyzed nine risk behaviors, including excessive alcohol use, illegal drug use, heavy smoking, high media use and truancy.
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