VIAGRA contains sildenafil, which is the same drugs present in Yet another drug named REVATIO. REVATIO is employed to treat a rare disorder named pulmonary arterial hypertension (PAH).delovnim procesom. Prevzemanje odgovornosti za lastno u?enje. Pridobivanje novega znanja in spretnosti v nadzorovanem okolju. To raven ozna?uje dolo?ena podjetniška