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The major cause of unplanned pregnancies in women using oral contraceptives is

  1. Breakthrough ovulation at midcycle

  2. High frequency of intercourse

  3. Incorrect use of oral contraceptives

  4. Gastrointestinal malabsorption

  5. Development of antibodies 

 

in Ob/Gyn by

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c. Incorrect use of oral contraceptives
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