Dr Hall is survived by his wife and three daughters.

霍尔医生死后遗下妻子和三个女儿。

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Dr Hall and Dr Hansch, meanwhile, are responsible for taking the art of measurement to new extremes.

同时，霍尔和亨施博士使测量技术达到了新的极致。

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Dr Hall looked for links between the placebo effect's strength and certain mutations, known as single nucleotide polymorphisms (SNPs), in which a single DNA "letter" in a gene is changed.

霍尔博士寻找了安慰剂效应强度和某些基因突变之间的联系，这些突变被称为“单核苷酸多态性”（SNPs），其基因中单个DNA的碱基“字母”序列发生改变。

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Nevertheless, Dr Hall and his colleagues suspect the wastage they have discovered and America's rising levels of obesity are connected.

ECONOMIST: America��s food-waste problem is getting worse

Not easy, in a world whose economic imperative is to satisfy every appetite, but perhaps a little more urgent now Dr Hall has put numbers on it.

ECONOMIST: The difficulty of losing weight is captured in a new model

Dr. Hall joined the chat room via telephone from Seattle, Washington and CNN.com provided a typist.

CNN: Dr. William Hall: Medical impact of bioterrorism