RT Journal Article SR Electronic T1 An analysis of hospitalization insurance schemes. JF British Journal of Preventive & Social Medicine JO Br J Prev Soc Med FD BMJ Publishing Group Ltd SP 197 OP 207 DO 10.1136/jech.27.4.197 VO 27 IS 4 A1 C E Frost A1 A W Ward YR 1973 UL http://jech.bmj.com/content/27/4/197.abstract AB