C. Gries

[Identification and grouping of pain patients according to claims data].

R. Treede, J. Kugler, G. Müller-Schwefe, 2010, Schmerz.

CRNA awareness and experience with perioperative DNR orders.

V. C. Coopmans, C. Gries, 2000, AANA journal.

An investigation of the current literature on the effectiveness of patient-controlled analgesia methods.

H. S. Smith, C. Gries, A. Cokefair, 1996, CRNA : the clinical forum for nurse anesthetists.