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Pain scores are plotted as mean and SEM before and at various time intervals after intramuscular (IM) injection of 1 000 mg testosterone undecanote (TU) in 4-mL castor oil vehicle into the upper outer quadrant of the buttock region. The three plots correspond to the pain score time course evaluated at three quartiles for BMI (Q1, 24.6 kg m− 2; Q2, 27.9 kg m− 2; Q3, 31.1 kg m− 2).
