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2. Women’s experience of pain during childbirth;Lundgren;Midwifery,1998
3. Epidural versus non-epidural or no analgesia in labour;Anim-Somuah;Cochrane Database Syst Rev,2011
4. Pain is the club: identity and membership in the natural childbirth community;Rafalovich;Qual Sociol Rev,2016
5. Labour pain as a model of acute pain;Melzack;Pain,1993