Fig. 4. Prescription patterns of controller medications among different age groups. Shaded areas stand for the proportion of LTRA-containing modalities. GINA, Global Initiative for Asthma; ICS, inhaled corticosteroid; JPGL, Japanese Pediatric Guideline; LABA, long-acting beta-2 receptor agonist; LTRA, leukotriene receptor antagonist; SABA, short-acting beta-2 receptor agonist.