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  "title": "Thumb base osteoarthritis: ultrasound-guided platelet-rich plasma versus placebo injection (thumbs-up study) – study protocol of a randomised double-blind placebo-controlled trial",
  "title_text": "Thumb base osteoarthritis: ultrasound-guided platelet-rich plasma versus placebo injection (thumbs-up study) – study protocol of a randomised double-blind placebo-controlled trial",
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