Perbedaan kadar imunoglobulin E spesifik serum kuantitatif akibat sensitisasi dermatophagoides pteronyssinus, dermatophagoides farinae dan blomia tropicalis pada asma alergik intermiten dan persisten = Difference of serum quantitative specific ige level induced by dermatophagoides pteronyssinus dermatophagoides farinae and blomia tropicalis sensitization in intermittent and persistent allergic asthma