[1] Univ Bern, ISPM, Finkenhubelweg 11, CH-3012 Bern, Switzerland
[2] Univ Lucerne, Dept Hlth Sci & Hlth Policy, Luzern, Switzerland
[3] Childrens Hosp Eastern Switzerland, Div Pediat Pulmonol, St Gallen, Switzerland
[4] Univ Hosp Lausanne CHUV, Dept Pediat, Resp Unit, Lausanne, Switzerland
[5] Univ Childrens Hosp Zurich, Div Resp Med, Zurich, Switzerland
[6] Univ Childrens Hosp Zurich, Swiss Newborn Screening Lab, Zurich, Switzerland