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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.
user
Blastocyst implantation close to internal os causes-
assistant
The correct answer is  Ans. is 'a' i.e., Placenta Previa Placenta Previao When the placenta is implanted partially or completely over the lower uterine segtnent, over and adjacent to the internal os, it is called placenta previa.