Graduated in Medicine (UFRGS, 1999), specialization in pediatrics (HCPA, 2001), pediatric pulmonology (PUCRS, 2003), MS in pediatrics (PUCRS, 2004) and a Ph.D. in child health (UNICAMP, 2009). Held expertise in genetic epidemiology at the University of Munich (LMU, Germany, 2007). Leonardo is currently a professor at the School of Medicine - PUCRS (Department of Pediatrics); and researcher at the Centro Infant (PUCRS). Collaborates as a reviewer of the following journals: Brazilian Journal of Pulmonology, Journal of Pediatrics, Pediatric Pulmonology, European Respiratory Journal and PLOS One; has over 70 published articles in the area, with index H = 16 (Scopus). The researcher held experience in child health, with emphasis on respiratory infections, mainly in the following topics: epidemiology of respiratory infections, genetic epidemiology, viral bronchiolitis, asthma and cystic fibrosis.