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menstruation simply stopped / natural menopause (1)
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while taking or after stopping hormone replacement drugs (endometriosis drugs, corpus luteum hormones/progestogens, antiestrogens in breast cancer treatment) (2)
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after a hysterectomy (3)
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due to radiation/chemotherapy (4)
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Continuous use of the pill (5)
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Implant for contraception (7)
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Hormone patch (8)
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Do not know (998)
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Refused to answer (999)