The various specialized associations that gather people together in the name of their Christian vocation and mission within a particular professional or cultural field have a precious role to play in forming mature Christians. For example, a Catholic association of doctors forms those who belong to it through the exercise of discernment with regard to the many problems that medical science, biology and other sciences place before the professional competence of doctors, as well as before their personal conscience and faith. The same could be also said of Catholic associations of teachers, legal professionals, businessmen and women, workers, as well as Catholic sports associations and ecological associations and so forth. In this context, the Church's social doctrine shows that it is an effective means for forming individual consciences and a country's culture.
Placenta previa can be associated with heavy blood loss, and it is important that a senior doctor is present at delivery. Assessment of the placental site and cord insertion by ultrasound scan prior to the operation is helpful in planning the surgical approach on reaching the placenta: blunt dissection should follow preferably gently pushing the placenta aside to access the membranes, but it may have to be entered digitally and the cord insertion should be avoided and the cord clamped quickly after delivery of the baby.27 2b1af7f3a8