John J, U. SE. A prospective observational study on lymph node mapping of sentinel lymph node biopsy using methylene blue in carcinoma breast. Int Surg J [Internet]. 2020 Dec. 28 [cited 2025 Nov. 10];8(1):176-9. Available from: https://www.ijsurgery.com/index.php/isj/article/view/6734