PT - JOURNAL ARTICLE AU - Björk, V O AU - Cullhed, I TI - Functional results with aortic ball valve prostheses (Starr-Edwards) followed for two to three years. AID - 10.1136/thx.22.1.21 DP - 1967 Jan 01 TA - Thorax PG - 21--24 VI - 22 IP - 1 4099 - http://thorax.bmj.com/content/22/1/21.short 4100 - http://thorax.bmj.com/content/22/1/21.full SO - Thorax1967 Jan 01; 22