“…In addition, EPs tended to order diagnostic tests for the evaluation of acute bronchiolitis more frequently than did pediatricians. Use of diagnostic testing is one of the competencies during emergency medicine residency training; therefore, EPs tend to require diagnostic testing to rule out other severe conditions as a result of their training (17,18). However, diagnostic testing, such as laboratory tests, plays a limited role in acute bronchiolitis management and may prolong patient's length of stay, leading to ED overcrowding (19).…”