Author Details
Tobing, Tina Christina Lumban, <p><span lang="EN-US">Department of Pediatrics, Faculty of Medicine,</span><span lang="EN-US"> </span><span lang="EN-US">Universitas Sumatera Utara</span></p><p><span lang="EN-US">Department of Pediatrics, Adam Malik General Hospital, Medan</span></p>, Indonesia