1. Accuracy of surgeon-performed abdominal ultrasound for gallstones;Ahmad;J Ayub Med Coll Abbottabad,2005
2. Patient satisfaction and diagnostic accuracy with ultrasound by emergency physicians;Durston;Am J Emerg Med,2001
3. The use of ultrasonography to scan the abdomen of patients presenting for routine physical examinations;Rosenthal;J Fam Pract,1994
4. González Hidalgo E. Estudio de concordancia diagnóstica entre ecografías realizadas en atención primaria y especializada. Comunicación en el 6.º Wonca World Rural Conference, Santiago de Compostela, 2003, Book of abstracts.
5. Gaspari RJ, Dickman E. Learning curve of bedside ultrasound of the Gallbladder. J Emerg Med 2008 (En prensa).