request for a template for a project MUSE journal

[ehsanx]

Requesting to include a template for Observational Studies. Latex files are available here

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By filing an issue to this repo, I promise that

• I have fully read the issue guide at https://yihui.name/issue/.
• I have provided the necessary information about my issue.
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• I have learned the Github Markdown syntax, and formatted my issue correctly.

I understand that my issue may be closed if I don't fulfill my promises.

[cderv]

Thanks - I added the label so anyone who wants to contribute can do it. I'll be happy to review any PR!