Related Experiment Video
Updated: May 7, 2026

Models and Methods to Evaluate Transport of Drug Delivery Systems Across Cellular Barriers
Published on: October 17, 2013
Barriers to entry or exit: which ones are you building?
Michael T Harris1, Neil H Baum
1Surgical Services at Englewood Hospital and Medical Center, New Jersey, USA. michael.harris@ehmc.com
Abstract:
Unknowingly, we often create barriers that make it difficult for patients to enter or doctors to refer to our medical practices. Additionally, we make it too easy for patients and referring physicians to seek care elsewhere. This article will focus on these barriers to entry (which we need to knock down) and exit (which we want to build up) for a medical practice. We will demonstrate how you can identify and eliminate your entry barriers to make it easy for patients to become a part of your practice, and how you can build defenses to make it unlikely that patients will leave you and to prevent referring physicians from calling anyone else.
Related Concept Videos
Types of Building Separation Joints
Volume-change joints address the effects of expansion and contraction due to temperature and moisture variations. They are strategically placed at discontinuities in a building's mass where cracking is most likely and are spaced about 150 to 200 feet...
Spanning Openings in Brick Walls
Lintels are primary supports used to span openings and can be crafted from materials such as reinforced concrete, steel-reinforced brick masonry, or simple steel angles. These are straightforward to install and are typically concealed...
Barriers to Effective Communication I
Communication barriers include the following:
Physiological barriers: They are limitations caused by a person's health condition or disability, such as hearing loss, poor eyesight, illness, or unconsciousness. An example to overcome this barrier...
Physiological Barriers
The blood endothelial barrier is the most porous of these. It allows all small ionized, un-ionized, and lipophilic molecules to pass through the endothelial lining into the interstitial space...
Movement Joints in Buildings
The simplest type of movement joints, working joints, are...
Expansion and Contraction in Masonry Walls
To...