DLH, D., Usman, A., Nataprawira, M. and Primadi, A. (2016) “The prevalence of hyaline membrane disease and the value of shake test and lamellar body concentration in preterm infants”, Paediatrica Indonesiana, 43(3), pp. 77-81. doi: 10.14238/pi43.3.2003.77-81.