Thiazide diuretics alone or in combination with a potassium-sparing diuretic on blood pressure-lowering in patients with primary hypertension: protocol for a systematic review and network meta-analysis. - Martins, Vítor M.; Ziegelmann, Patrícia K.; Helal, Lucas; Ferrari, Filipe; Lucca, Marcelo B.; Fuchs, Sandra C.; Fuchs, Flávio D. (Systematic Reviews, 2022)