Necessity of requested radiologic examinations: a prospective study (report on the data of 1994).
Krug
B
B
Institut und Poliklinik für Radiologische Diagnostik der Universität zu Köln, Germany.
Lackner
K
K
D003952:Diagnostic Imaging / Q000706:statistics & numerical data*; D005858:Germany; D006300:Health Services Misuse; D006801:Humans; D011446:Prospective Studies