An initial ranked list of a first plurality of visual documents is obtained from a first source in response to a query, and a second plurality of visual documents relevant to the query is gathered from a plurality of second sources. These compounds are selective PDE5 inhibitors and possess advantageous biopharmaceutical and pharmacokinetic properties. Subscriber receiver includes camera and other media IO device for multi-way video conferencing. A second conduit member is received by the assembled components comprising the retainer member, gasket member and first conduit member. The present invention also relates to an apparatus for carrying out said method.