Talk:Serotonin-specific reuptake inhibitor

The link at the bottom of the article goes to a site that defines SSRI as "Selective Serotonin Reuptake Inhibitor" rather than "Serotonin-Specific Reuptake Inhibitor". I've always heard it said as the former. Google favors the former by a ratio of 29,000 to 853. Is the name of this article correct? Is the other name correct? If they're both right, which is most common among experts in this field?