“Placebo-Controlled Graded Oral Penicillin Challenge in Low-Risk Patients Living With HIV Without Prior Skin Testing”. Revista Alergia México 73, no. 1 (March 31, 2026): 9–16. Accessed September 23, 2026. https://ojs.revistaalergia.mx/ojs/index.php/ram/article/view/1546.