Soesilo, H., Soenarto, Y., Soelistyowati, S., Ristanto, R. and Ismangoen, I. (1982) “Effects of Chloramphenicol on the Titer of Widal in Typhoid Fever”, Paediatrica Indonesiana, 22(9-10), pp. 165-70. doi: 10.14238/pi22.9-10.1982.165-70.