Perhaps you should try some spelling variations:
pediatric » pediatriac (Expand Search), pediatriec (Expand Search), pediatriic (Expand Search)
pediatrics » pediatriacs (Expand Search), pediatriecs (Expand Search), pediatriics (Expand Search)
pediatri » pediatria (Expand Search), pediatrie (Expand Search), pediatrii (Expand Search)
pediatriecs » pediatriaecs (Expand Search), pediatrieecs (Expand Search), pediatriiecs (Expand Search), pediatrica (Expand Search), paediatrics (Expand Search), pediatrie (Expand Search)
pediatrieecs » pediatriaeecs (Expand Search), pediatrieeecs (Expand Search), pediatriieecs (Expand Search), pediatrica (Expand Search), paediatrics (Expand Search), pediatrie (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: acta ((((pediatr or pediatric) or pediatrics) or pediatri) or (pediatriecs or pediatrieecs))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: acta ((((pediatr OR pediatric) OR pediatrics) OR pediatri) OR (pediatriecs OR pediatrieecs)).
• Adding a wildcard symbol may retrieve word variants: acta ((((pediatr or pediatric) or pediatrics) or pediatri) or (pediatriecs or pediatrieecs))*.