1. Croup: An 11-year study in a pediatric practice;Denny;Pediatrics,1983
2. Adult croup;Tong;Chest,1996
3. Human metapneumovirus and lower respiratory tract disease in children;Ho;N Engl J Med,2004
4. Croup: Duration of symptoms and impact on family functioning;Johnson;Pediatr Research,2001
5. The management of croup;Brown;Br Med Bull,2002