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Dr. Md Rushad Rahman
এমবিবিএস(আরপিএমসি)
,
পিজিটি(মেডিসিন)
You can buy it at most office supply stores such as Staples, or any other stores that have stationary items. You might even find some at the dollar store. If you have a ruler, you could also just draw grids onto plain paper.
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