EFFECT OF CAFFEINE INTAKE AND ITS DURATION OF ACTION ON PULMONARY FUNCTION TEST: A RANDOMIZED CONTROLLED STUDY. SJHR-Africa [Internet]. 2025 Jun. 1 [cited 2026 Aug. 14];6(6):8. Available from: https://sjhrafrica.org.sjhresearchafrica.org/index.php/public-html/article/view/1722