PubMedScan is a tool to effectively collect the research articles related to your interest. In this system, the query is given by a list of PMIDs to search related articles rather than by keywords or phrases. PubMedScan reports the information of related articles to the users by E-mail on daily bases.

PMID-Extractor
We also provide software PMID-Extractor to collect the PMIDs of your interest easily from your PDF or text files.
About PMID-Extractor (Japanese, English)  download