If you want a legal PDF, you must purchase it from the official Zero to Finals store.
The "Zero to Finals" series is a popular set of study materials for medical students, aiming to help them progress from a basic understanding of a subject to being able to answer complex questions and tackle final exams. The Pediatrics module likely covers the essential topics in the field, from child development and growth to common pediatric conditions and emergencies. zero to finals paediatrics pdf