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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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The progestin present in Sino-Implant II is
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The correct answer is  The Sino-Implant II is a less expensive two-rod levonorgestrel system manufactured in China and available in several countries. It is effective for 4 yearsReference: Novak's gynaecology; 14th edition; Chapter 10; Family planning