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Sun exposure, vitamin D intake and progression to disability among veterans with progressive multiple sclerosis |
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| Authors: | McDowell Tzu-Yun Amr Sania Culpepper William J Langenberg Patricia Royal Walter Bever Christopher Bradham Douglas D |
| Affiliation: | MS Center of Excellence-East, Baltimore VAMC, University of Maryland, Baltimore School of Medicine, Baltimore, MD, USA. tycmcdowell@hotmail.com |
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| 本文献已被 PubMed 等数据库收录！ | |