none or minor: including ligation of preauricular tag, abscess drainage .....
cardiac:examples: ligation of arterial ductus, atrioseptostomy (also by balloon), Fontan operation....
other major:examples: herniotomy, closure of gastroschisis, omphalocele, myelomeningocele or diphragmatic hernia, correction of esophageal, duodenal or anal atresia, ventriculo-atrial shunt.....