Study Protocol - Impact of Lactobacillus Rhamnosus GG on Allergic Reactions and Gut Microbiota Composition in Children With Cow’s Milk Allergy: A Single-Center, Randomized, Double-Blinded, Placebo-Controlled, Phase II – MILK ALLERGY Trial. PPCR 2021, 7 (1). https://doi.org/10.21801/ppcrj.2021.71.4.