Fig. 1From: Colostrum oropharyngeal immunotherapy for very low birth weight preterm infants: protocol of an intervention studyStudy timeline. 1: * VLBW-PTNB: Very low birth weight preterm newborn; DUCT: Data use commitment term; ICF: Informed consent form; IgA: immunoglobulin A. ** The Historical Control Group started collection in 2015. Source: Own productionBack to article page