Harvard Heart Letter

April 2009 references and further reading

Health Physics Society. Naturally occurring radiation. Mettler FA, Jr., Bhargavan M, Thomadsen BR, et al. Nuclear medicine exposure in the United States, 2005-2007: preliminary results. Seminars in Nuclear Medicine 2008; 38:384-91. Mettler FA, Jr., Thomadsen BR, Bhargavan M, et al. Medical radiation exposure in the U.S. in 2006: preliminary results. Health Physics 2008; 95:502-7.
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