http://seagullreference.blogspot.com/2011/02/development-in-investigation-of.htmlSewitch said it was a nurse at the hospital who, remembering a case of thallium poisoning in the 1990s in China, suggested doctors include a test for thallium when Wang did not respond to treatment and continued to worsen.
虽然这位护士的身份没有公开，但是我相信关注朱令的应该是大陆移民。