Suwannobol, N. , JintanaTapin, J. , Narachan, K.. "The Results of the Fetal Weight Estimation of the Infants Delivered in the Delivery Room At Dan Khunthot Hospital by Johnson-s Method". World Academy of Science, Engineering and Technology, Open Science Index 71, International Journal of Medical and Health Sciences, (2012), 6(11), 523 - 525.