[Use of exhaled thoron activity measurement system in radiological labor hygiene].
Cheng
Yong-e
YE
Chen
Xing-an
XA
D001944:Breath Tests; D006801:Humans; D008906:Mining; D011009:Pneumoconiosis / Q000175:diagnosis; D011886:Radon / Q000032:analysis*
D011886:Radon