Related Experiment Video

Updated: Aug 14, 2026

Observational Study Protocol for Repeated Clinical Examination and Critical Care Ultrasonography Within the Simple Intensive Care Studies
10:38

Observational Study Protocol for Repeated Clinical Examination and Critical Care Ultrasonography Within the Simple Intensive Care Studies

Published on: January 16, 2019

Maintaining study validity in a changing clinical environment

D B McGuire1, V G DeLoney, K A Yeager

  • 1Oncology Advanced Practice Nurse Program, School of Nursing, University of Pennsylvania, Philadelphia 19104, USA.

Nursing Research
|August 10, 2000
PubMed
Abstract

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