Randomization
Participants in the study were randomly allocated in two groups by simple alleatorization using the tool Epidat, program for epidemiological data analysis. Version 4.2, July 2016. Consellería de Sanidade, Xunta de Galicia, Spain; Organización Panamericana de la Salud (OPS‐OMS); Universidad CES, Colombia. Participants were randomly allocated to olive oil group (extent equivalent of 2 mL of early harvest olive oil, containing 0.75 mg of polyphenols) or no treatment group. Allocation assignment was concealed from investigators and patients.