Sentence examples for several classification systems from inspiring English sources

Several classification systems have been proposed, but none has been accepted universally [3, 4].

Over the last decades several classification systems for TAs were established based either on function or evolutionary relationships.

Several classification systems have been proposed to group patients with a distinct radiographic pattern [4, 5, 6, 7].

As enzymes are a relatively conserved group there are several classification systems available that are common to all species and link a protein sequence to an enzymatic function.

To clarify PRO content, several classification systems were developed (e.g., by Valderas and Alonso [5]), many of which are based on specific constructs despite an universal agreement that PRO constructs do not exist.

This involves taking the medical history of the patient and performing a physical examination, the results of which can be scored against one of several classification systems.

Since the introduction of LOE, several other organizations have adopted various classification systems, most of which share a lot in common (Bossuyt & Leeflang 2008; Gutmann 2009; Mileman & van den Hout 2009; Reitsma et al. 2009; Rosenberg & Donald 1995; Suebnukarn et al. 2010; Sutherland & Matthews 2004; Zwahlen et al. 2008; Burns et al. 2011; Canadian Task Force on the Periodic Health 1979).

Although several radiological classification systems exist, none includes biochemical features.

Like most sports injuries, there are degrees of concussions with several different classification systems used.

Several dozen classification systems exist already.

Some childhood fracture types and segments have several available classification systems while others have none.