| cleanAbstracts | clean data | 
| colSets | plot colors | 
| editPMIDs | edit PMIDs | 
| getAbstracts | get Abstracts | 
| getPMIDs | get PMIDs using author names | 
| getPMIDsByKeyWords | get PMIDs using Journal names and Keywords | 
| plotWordCloud | PubMed wordcloud using function 'wordcloud' of package wordcloud |