谁能下载从PUBMED搜索到的PDF格式医学文献

1: Vitamin D: cardiac benefits uncertain. Its value in cardiovascular diseaseprevention has not been confirmed. Harv Heart Lett. 2012 Nov;23(3):3. PubMedPMID: 23405429.2: Lee K. Regional percent fat and bone mineral density in Korean adolescents:the Fourth Korea National Health and Nutrition Examination Survey (KNHANES IV-3),2009. Asia Pac J Clin Nutr. 2013;22(1):69-73. doi: 10.6133/apjcn.2013.22.1.14.PubMed PMID: 23353613.3: Wahlqvist ML. Vitamin D status and food security in North-East Asia. Asia Pac J Clin Nutr. 2013;22(1):1-5. doi: 10.6133/apjcn.2013.22.1.21. Review. PubMedPMID: 23353604.4: Oquendo M, Abramovits W, Morrell P. Topical vitamin D analogs available totreat psoriasis. Skinmed. 2012 Nov-Dec;10(6):356-60. Review. PubMed PMID:23346664.5: In search of vitamin D. The right dose for bone health depends on key factors.Harv Health Lett. 2012 Dec;38(2):4. PubMed PMID: 23346626.类似这样的 要PDF格式的全文 有500个

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