Background: It is known that after Cesarean section is correlated with respiratory complication more, if done after 37-38 week of gestation than if done after 39 weeks or more.

Goal: The aim of the current study is to find out if these respiratory complications extend to later life.

Methode: Reviewing the patients' medical file, and collecting data about respiratory complication.

Background: It is known that after Cesarean section is correlated with respiratory complication more, if done after 37-38 week of gestation than if done after 39 weeks or more. We have already conducted a study about this topic, and published our results.

Goal: The aim of the current study is to find out if these respiratory complications extend to later life.

Method: Reviewing the patients' medical file, and collecting data about respiratory complication. We will use the same patients we used at the first study. Respiratory complications are defined as diagnosis of asthma, treatment by inhalations or systemic steroids, or consultation by pulmonologist.

Inclusion Criteria:

• Children born in 2007-2009 our medical center by elective Cesarean section according to a list of IDs we have.

Exclusion Criteria:

• Children with respiratory congenital defect that was not known at the first week of life.

Children born in 2007-2009 in "Hillel Yaffe" medical center by elective Cesarean section according to a list of IDs we have.