Quintero, J. C., Olaya, S., Peña, A., Gil, Y. and Palencia, Y. (2013) “Extreme maternal morbidity (EMM): description of a 23-case series and analysis of the ‘three delays’”, RFS Revista Facultad de Salud, 5(2), pp. 52–60. doi: 10.25054/rfs.v5i2.142.