Efektifitas slow deep breathing terhadap penurunan tekanan darah pada pasien hipertensi primer di Atambua Nusa Tenggara Timur : a randomized controlled trial = Effectiveness of slow deep breathing on decreasing blood pressure in primary hypertension patients at Atambua East Nusa Tenggara : a randomized controlled trial - Pius A.L. Berek, author (Fakultas Ilmu Keperawatan Universitas Indonesia, 2010)