There are a variety of email newsletters you can send.

http://people.instructure.com/eportfolios/109983/Folitrax_75_Mg_Used__Ipca__Cancer
http://mcook.instructure.com/eportfolios/37163/Evoxil_250_Mg_Sildenafil__Leeford__Antibiotics

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If only few people click on the links in your newsletter, try to make your call-to-action CTA stand out more.