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2. GOLD
JOURNAL (http://www.goldjournal.net)
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3. E-MEDICINE (http://emedicine.medscape.com/)
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- http://emedicine.medscape.com/article/449477-overview
- http://emedicine.medscape.com/article/446554-overview
4. JUROLOGY (http://www.jurology.com)
- http://www.jurology.com/article/S0022-5347(17)39242-X/fulltext
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- http://www.jurology.com/article/S0022-5347(16)31515-4/fulltext
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5. SCIENCE DIRECT (http://www.sciencedirect.com/)