You can download the PubMed citation data from the PubMed FTP site and you no longer need a license to do this.

• Each year in December, NLM releases a comprehensive (baseline) set of citation records in XML format for download.
• Each day, NLM produces update files that include new, revised and deleted citations.

See the README.txt file that describes the repository and also lists terms and conditions for using the PubMed data.