User talk:Alexander Guerrero MD

Welcome!

Hello, Alexander Guerrero MD, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are some pages that you might find helpful: I hope you enjoy editing here and being a Wikipedian! Please sign your messages on discussion pages using four tildes ( ~ ); this will automatically insert your username and the date. If you need help, check out Questions, ask me on my talk page, or ask your question on this page and then place  before the question. Again, welcome!
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Welcome to Wikipedia. Everyone is welcome to contribute to the encyclopedia, but when you add or change content, please cite a reliable source for your addition. This helps maintain our policy of verifiability. See Citing sources for how to cite sources, and the welcome page to learn more about contributing to this encyclopedia. Thank you. Materialscientist (talk) 01:47, 16 February 2012 (UTC)