Costa Martins, J. M., Silva, C. F. da, Pereira, M., Martins, H., Oliveira, C., Puga, A., Coelho, R. and Tavares, J. (2014) “Women’s Attachment as a Predictor of Pain During Labour and Post-Delivery: a Prospective Observational Study”, Acta Médica Portuguesa. Lisbon, Portugal, 27(6), pp. 692–699. doi: 10.20344/amp.4960.