Soenarto, Soenarto, and Helena Sendow-Tangkilisan. 2010. “Relationship Between Obesity and Leptin Serum Among Low Socioeconomic Primary School Children Aged 5-7 Years”. Paediatrica Indonesiana 50 (3), 166-9. https://doi.org/10.14238/pi50.3.2010.166-9.