Our services cover the entire region of Rethymnon and our doctors are ready to deal with every case that concerns the primary care medicine in and out of our facilities by visiting patients at home or in the hotel room always upon request. The first document guaranteed sole production and sale of the substance until , while the second gave Pfizer the exclusive use to treating erectile dysfunction with sildenafil until The Korean Court system made a ruling against Pfizer in June , allowing for the unhindered domestic production of generic prescription sildenafil. ntellos.gr It works by inhibiting blocking the action of an enzyme called PDE5. Viagra can sometimes cause low blood pressure. Secretaries organize every case from the request for medical help to the opening of a full medical record for each patient and the assisting in filling all the proper paperwork for the insurance companies by keeping an adequate electronic archive.