The team typically includes a mission site coordinator, plastic surgeons, anesthesiologists, a pediatrician, an intensive care physician, head or coordinating nurse, pre- and post-op nurses, child development specialists, speech pathologists, dentists and/or orthodontists. During the fiscal year of 2018, Operation Smile hosted 156 medical missions in 80 unique sites around the world and provided free surgical care for over 12,00 children and young adults. Nearly 82% of medical professionals volunteering with Operation Smile were from low and middle income countries. Medical volunteers provided approximately 397,312 hours of free care for Operation Smile's patients. Mission Scheme Typically, a surgical mission takes four days: from a Thursday to a Sunday. The first day is for Screening. Commonly, near the hospital, the logistics team prepares an area where volunteers will be supervising each child. The layout of the place consists of a station-based distribution, where each specialized doctor has its own space. When patients arrive, they are asked to take a seat and wait until a student volunteer begins the process. Most of patients are babies and toddlers, so they are accompanied by their mothers or by any other member of their family. It is important to mention that children should not be sick in order to be eligible for a surgery. Once a student volunteer reaches out to a family, he will guide them through each station. The first station is for data validation, where a volunteer validates patients ID, birth certificate, laboratory exams and previous clinical history. In the second station, a team of photographers is in charge of taking several pictures of the child's malformation from different angles, which will be a resource for surgeons. After these two stations are completed, the order of the following ones may vary from country to country. However, it must include a visit with a plastic surgeon, anesthesiologist, a pediatrician, an intensive care physician, head or coordinating nurse, psychologist, and dentist. Each specialist evaluates the candidate and, at the end of the day, publishes the list of the children who will be in surgery, detailing day and hour. There are approximately 30-35 children per day. Friday, Saturday and Sunday are for surgery. For the volunteers, the day starts at 6:00 am, because they have to go to the hospital and prepare the materials they need for the procedures. Patients start to arrive around 8:00 am. Children must be fasting since the night prior as