B. K. Chaitanya, M. Srinivasulu, Dr.V. Jyothi, and V. K. Sayeli, “EFFECT OF CAFFEINE INTAKE AND ITS DURATION OF ACTION ON PULMONARY FUNCTION TEST: A RANDOMIZED CONTROLLED STUDY”., SJHR-Africa, vol. 6, no. 6, p. 8, Jun. 2025, doi: 10.51168/sjhrafrica.v6i6.1722.