Rocky Malindo Sidabutar, Amira Permatasari Tarigan, Pandiaman Pandia, and Taufik Ashar, “COMPARISON OF UPPER EXTREMITY MUSCLE STRENGTH BETWEEN PATIENTS WITH STABLE AND EXACERBATED CHRONIC OBSTRUCTIVE PULMONARY DISEASE AT A HOSPITAL IN MEDAN”, JKK, vol. 12, no. 3, pp. 292–298, Sep. 2025, doi: 10.32539/jkk.v12i3.688.