Asterina, R., Siregar, S., Madiyono, B. and Supriyatno, B. 2016. Clinical manifestations of childhood asthma persisting until the age of seven. Paediatrica Indonesiana. 44, 1 (Oct. 2016), 1-6. DOI:https://doi.org/10.14238/pi44.1.2004.1-6.