Right bundle branch block. should also be visible in v2
A 'Trend' is a large social influence if this is what you are talking about. Trends are something where one person does/wears it (usually a popular person everyone likes) and then everyone else starts doing it.
Communicate , Get It In Writing , Stay Up To Date On Current Standards , Always Obtain Informed Consent , Be Sure To Follow Up & Keep An Open Mind
Answer:
The DSM-5 is the classification system of psychological disorders
Diagnostic and Statistical Manual of Mental Disorders