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Dr. Md Rushad Rahman
এমবিবিএস(আরপিএমসি)
,
পিজিটি(মেডিসিন)
Either use the seal and press the bag while it's pulling the air out to get it to retain shape, or if you have the kind you're supposed to roll, gently sit on it on the bed so it pushes the air out and stays flat.
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