Complex sentence: The caloric intake of children with RSS must be carefully controlled in order to provide the best opportunity for growth, if the child is unable to tolerate oral feeding then enteral feeding may be used, such as the percutaneous endoscopic gastrostomy.
Split into simpler sentences: The caloric intake of children with RSS must be carefully controlled in order to provide the best opportunity for growth. If the child is unable to tolerate oral feeding, then enteral feeding may be used, such as the percutaneous endoscopic gastrostomy.