Skor mallampati, jarak sternomental dan jarak buka mulut sebagai prediktor sulit intubasi berdasarkan derajat visualisasi laring cormack lehane pada ras Melayu di RSUPNCM = Mallampati score sternomental distance and inter incisor gap as predictors of difficult intubation based on cormack lehane larynx visualization scale in malay race patients of Cipto Mangunkusumo National central general hospital / Julian Fitra