Sundarita E, Andayani Y, Syahrir M, Djamaluddin N. Gastrointestinal Stromal Tumor Coexistence with Multiple Myeloma: A Case Report. apjcc [Internet]. 31May2023 [cited 2May2024];8(2):435-6. Available from: http://waocp.com/journal/index.php/apjcc/article/view/1035