During the last quarter of the last century an increasing trend in asthma-related hospital admissions has been observed, although in the last few years this trend seems to be changing [ 4 , 5 ]; however, there are significant differences between countries as well as between sexes and age groups [ 2 , 5 ].
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The sentences
This is the opposite of what is seen in most developed countries, where there is a decreasing trend [ 3 ].