Pediatrics Resident;
Pontifical Catholic University of Chile;
Santiago;
Chile;
School of Medicine;
Pontifical Catholic University of Chile;
Santiago;
Chile;
Pediatrician;
Resident of Pediatric Gastroenterology and Nutrition;
Pontifical Catholic University of Chile;
Santiago;
Chile;
Otorhinolaryngologist;
Assistant Professor;
Pediatrics Division;
Medical School;
Pontifical Catholic University of Chile;
Santiago;
Chile;
Hematologist-Oncologist;
Assistant Professor;
Pediatrics Division;
Medical School;
Pontifical Catholic University of Chile;
Santiago;
Chile;
aPTT; Preoperative Study; Tonsillectomy; Adenoidectomy; Coagulopathy;