| Journal of Asthma, Volume 58, Issue 5, May 2021 is now available online on Taylor & Francis Online. This new issue contains the following articles: Epidemiology Asthma-related emergency department (ED) visits and post-ED visit hospital and critical care admissions, National Hospital Ambulatory Medical Care Survey, 2010–2015 Xiaoting Qin PhD, MS, Hatice S. Zahran MD, MPH & Josephine Malilay PhD Pages: 565-572 | DOI: 10.1080/02770903.2020.1713149 Phenotypes Cross-sectional phenotyping of small airway dysfunction in preschool asthma using the impulse oscillometry system Plamen Bokov MD, PhD, Gabriel Bafunyembaka MD, Noria Medjahdi MD, Agnès Bernard MD, Mohamed Essalhi MD, Véronique Houdouin MD, Claudine Peiffer MD, PhD & Christophe Delclaux MD, PhD Pages: 573-585 | DOI: 10.1080/02770903.2020.1719133 Severe Asthma Uncontrolled asthma occurs in all GINA treatment steps and is associated with worse physical health – a report from the OLIN adult asthma cohort |  Caroline Stridsman RN, PhD, Malin Axelsson RN, Katja Warm MD, PhD & Helena Backman PhD Pages: 586-595 | DOI: 10.1080/02770903.2020.1713150 Unexpected results of a randomized quality improvement program for children with severe asthma Ricardo A. Mosquera MD, Elenir B. Caramel Avritscher MD, PhD, Aravind Yadav MD, Claudia Pedroza PhD, Cheryl L. Samuels MSN, CPNP, Tomika S. Harris DNP, CPNP, Cecilia Tetzlaff BSN, RN, Julie Eapen MD, Traci R. Gonzales PNP, Charles Green PhD & Jon E. Tyson MD, MPH Pages: 596-603 | DOI: 10.1080/02770903.2020.1723621 Biomarkers Relationship between serum 25-hydroxyvitamin D and inflammatory cytokines in Nigerian children with asthma Bankole Peter Kuti MBChB, FWACP, FMCP (Paed) & Demilade K. Kuti MBChB Pages: 604-613 | DOI: 10.1080/02770903.2020.1712726 Fractional exhaled nitric oxide: where there is smoke, there is fire Ourania S. Kotsiou MD, PhD, Konstantinos I. Gourgoulianis MD & Zoe Daniil MD Pages: 614-615 | DOI: 10.1080/02770903.2020.1713146 Environmental Determinants A randomized trial of a one-time pest intervention: impact on childhood asthma outcomes | Carolyn Olson MPH, Cheng-Shiun Leu PhD, Howard Alper PhD, MS, Michael Millican BA & Marina Reznik MD, MS Pages: 616-624 | DOI: 10.1080/02770903.2019.1709870 Diagnosis Diagnostic value of the hypertonic saline bronchial provocation test in children with asthma using the high-power aerosol provocation system Ming-juan Zhou MSc, Yuan-bin Chen MSc, Wen-wei Ouyang MSc, Chu-yin Ye BS, Jun-liang Ye BS, Jia-li Yan MSc, Yin-ji Xu MSc & Lin Lin MSc Pages: 625-632 | DOI: 10.1080/02770903.2020.1713148 Pharmacotherapy Long-term safety and efficacy studies of epinephrine HFA metered-dose inhaler (Primatene® Mist): a two-stage randomized controlled trial Edward M. Kerwin MD, Donald P. Tashkin MD, Phillip E. Korenblat MD, Leon S. Greos MD, David S. Pearlman MD, George W. Bensch MD, S. David Miller MD, Tony Marrs MPH, Mary Z. Luo PhD & Jack Y. Zhang PhD Pages: 633-644 | DOI: 10.1080/02770903.2020.1713147 Association of various weight-based doses of continuous albuterol on hospital length of stay Raymond Parlar-Chun MD & Kristen Arnold MD Pages: 645-650 | DOI: 10.1080/02770903.2020.1723622 Mepolizumab add-on therapy in a real world cohort of patients with severe eosinophilic asthma: response rate, effectiveness, and safety Jermo Johannes van Toor MD, Sophie C. van der Mark MD, Jasper H. Kappen MSc, MD, PhD, J. C. C. M. In ’t Veen MD, PhD & Gert Jan Braunstahl MD, PhD Pages: 651-658 | DOI: 10.1080/02770903.2020.1723623 The pharmacists’ ability to use pressurized metered-dose inhalers with a spacer device and factors affecting it Erdem Topal MD, Mustafa Arga MD, Abdullah Hakan Özmen MD, Muhammet Arif Kurşun MD, Ömer Adil İlhan MD & Mustafa Alıcı MD Pages: 659-664 | DOI: 10.1080/02770903.2020.1731823 Management Parental preferences for survey mode of administration, interview versus self-administered, with an asthma management questionnaire Frances Barry MA, Lindsey R. Thompson MS, MPH, Bahareh Ravandi MD, Todd P. Chang MD, MAcM, Jill S. Halterman MD, MPH, Peter G. Szilagyi MD, MPH & Sande O. Okelo MD, PhD Pages: 665-673 | DOI: 10.1080/02770903.2020.1728766 Alternative Therapy Music therapy in pediatric asthma improves pulmonary function while reducing hospitalizations Joanne Loewy DA, LCAT, MT-BC, Cody Goldsmith BS, Saarang Deshpande BS, Alec Sun BS, Jennifer Harris BA (Hons), BMBS, PGcert, Cindy van Es PhD, Zvi Ben- Zvi MD & Stephen Dahmer MD Pages: 674-682 | DOI: 10.1080/02770903.2020.1712725 Adherence Prevalence and predictors of adherence to inhaled corticosteroids in young adults (15–30 years) with asthma: a systematic review and meta-analysis Jane Murphy MSc, Jenny McSharry PhD, Lisa Hynes PhD, Soraya Matthews MSc, Luke Van Rhoon MSc & Gerard J. Molloy PhD Pages: 683-705 | DOI: 10.1080/02770903.2020.1711916 |