Early Environmental and Maternal Determinants of Airway Inflammation in Wheezing Disorders in Infants

Inclusion Criteria: * Term Born group (H): Healthy, white and term Born infants and Children. Born 38-42 weeks postconceptional. * Preterm group (P): Healthy, white preterm Born infants and Children. Born \<37 weeks postconceptional. Which comply with the international criteria (Jobe and Bancalari) of a diagnosis of bronchopulmonary dysplasia (BPD), or of chronic lung disease of the new-born (CLD). * Risk pregnancy group (RP): White preterm Born infants and Children, including Twins. Born \<37 weeks postconceptional. With fetal growth restriction (FGR), intrauterine growth restriction (IUGR) or preeclampsia (PE). With gestational Diabetes (GMD). With IVF or Amnion dysfunction. * Parents: language skills in German or French (by at least one parent). * Both of the parents can be Smokers and may be atopics (allergy of the mother and/or the Father). * Signed, written informed consent of the parents. Exclusion Criteria: * Term Born group (H): Need of respiratory support \> three days postnatal. Severe malformations or known diseases. Maternal drug abuse except smoking. Known sever maternal disease postpartum. Insufficient Knowledge of Project language (no German or French speaker). Pacemaker, continuous glucose monitor. * Preterm group (P): Severe malformations or known diseases. Maternal drug abuse except smoking. Known severe maternal disease postpartum. Insufficient Knowledge of Project language (no German or French speaker). Pacemaker, continuous glucose monitor. * Risk pre…