National Children^s Study (NCS or Study)

国家儿童健康和人类发展研究所（NICHD）是牵头机构。 国家儿童研究机构（NCS或研究），一项纵向队列研究， 研究环境影响对健康和发展的影响， 十万个孩子。环境被广泛地定义为包括生物、物理、化学和环境。 社会/文化对儿童健康和发展的影响。研究的目标是 提供信息，最终将导致改善健康，发展， 孩子们的幸福。登记的儿童将从出生前一直跟踪到21岁 年有关这项研究的其他背景资料，请参阅研究的网站 （www.nationalchildrensstudy.gov）中找到。 该研究于2009年开始处于试点或先锋阶段，2010年扩大到包括37个先锋 地点由于合同到期和研究实施的变化， 地点将在2012年晚些时候确定。这些新合同的目的将是进行一项 所有研究中心活动有序且完整地移交给继任承包商。那里 在本合约期内，不会进行任何数据及/或样本收集活动。新 合同授予期为6个月，从2012年9月28日开始，持续到 到2013年3月31日。

The National Institute of Child Health and Human Development (NICHD) serves as the lead agency for the National Children¿s Study (NCS or Study), a longitudinal cohort study that will examine the effects of environmental influences on the health and development of approximately 100,000 children. Environment is broadly defined to include biological, physical, chemical, and social/cultural influences on children¿s health and development. The goal of the Study is to provide information that will ultimately lead to improvements in the health, development, and well being of children. Enrolled children will be followed from before birth until the age of 21 years. Additional background about the Study is available on the Study¿s Website (www.nationalchildrensstudy.gov ). The Study began in a pilot or Vanguard phase in 2009, expanding in 2010 to include 37 Vanguard locations. Due to contract expiration and changes in study implementation, new awards at these locations will be made later in 2012. The purpose of these new contracts will be to conduct an orderly and complete transition of all Study Center activity to a successor Contractor only. There will not be any data and/or specimen collection activities during this contract period. The new contract awards will be for a 6 month period beginning on September 28, 2012 and continuing on through March 31, 2013.