Chairunnisa M, Setya P P A, Rahmawaty A P D. Systematic Review : Immunoglobulin Concentration in Breast Milk as a Body Defense against Sars-Cov-2. JNK [Internet]. 2021 Aug. 15 [cited 2024 Nov. 23];8(2):255-62. Available from: http://ojs.phb.ac.id/index.php/jnk/article/view/663