(Q47909493)
Statements
1 reference
Population-based study of echocardiography. Time trends in utilization and diagnostic profile of an evolving technology, 1975-1987. (English)
1 reference
Tajik AJ
1 reference
Melton LJ 3rd
1 reference
Ballard DJ
1 reference
Khandheria BK
1 reference
Seward JB
1 reference
Weber VP
1 reference
1 January 1989
1 reference
5
1 reference
2
1 reference
249-261
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference