1. Effect of zinc supplementation on respiratory tract infections in children with cystic fibrosis;Abdulhamid;Pediatric Pulmonology,2008
2. Bioavailability of therapeutic Beta-Carotine (BC) in patients with cystic fibrosis (CF) and effects on anthropometrical parameters over 6 months [abstract];Engl;Monatsschrift fur Kinderheilkunde,1997
3. Effects of beta-carotene supplementation for six months on clinical and laboratory parameters in patients with cystic fibrosis;Renner;Thorax,2001
4. Patients with cystic fibrosis (CF) benefit from ß-Carotene supplementation for 6 months [abstract];Renner;Pediatric Pulmonology,1997
5. Patients with cystic fibrosis (CF) benefit from ß-Carotene supplementation for 6 months [abstract];Renner,1998