<unk><unk><unk>  can be classified into occult, moderate and severe<unk>  based on the severity of<unk> .
Lower gastrointestinal bleeding classification
Gastrointestinal varices classification
Bleeding classification
Nausea and vomiting classification
Gastrointestinal perforation classification
Peptic ulcer classification
Asplenia classification
Bowel obstruction classification