Tavares Pinheiro, R., Monteiro da Cunha Coelho, F., Azevedo da Silva, R., Amaral Tavares Pinheiro, K., Pierre Oses, J., de Ávila Quevedo, L., Dias de Mattos Souza, L., Jansen, K., Maria Zimmermann Peruzatto, J., Gus Manfro, G., Giovenardi, M., Almeida, S., & Lucion, A. B. (2013). association of a serotonin transporter gene polymorphism (5-HTTLPR) and stressful life events with postpartum depressive symptoms: a population-based study. Journal of psychosomatic obstetrics & gynaecology, 34, 29–33. http://access.bl.uk/ark:/81055/vdc_100038568520.0x000001