[word=and] [lemma=doctor] [word=refuse] [lemma=□]
[word=and] [lemma=doctor] [word=refuse] [lemma=to]
[word=and] [lemma=doctor] [word=refuse] [lemma=doctor]
Since a single day of hospitalization and medical treatment can cost thousands of dollars , many hospitals and doctors refuse to treat uninsured patients except in life-threatening emergencies .