©2013 National Research Council of Thailand
Sahaphol Anannamcharoen. 2007. A randomized clinical trial of closed hemorrhoidectomy under local perianal block versus spinal anesthesia. Field of Study Health Development, Chulalongkorn University;
Sahaphol Anannamcharoen. (2007) A randomized clinical trial of closed hemorrhoidectomy under local perianal block versus spinal anesthesia . Chulalongkorn University/Bangkok.
Sahaphol Anannamcharoen. A randomized clinical trial of closed hemorrhoidectomy under local perianal block versus spinal anesthesia. . Bangkok:Chulalongkorn University, 2007.
Sahaphol Anannamcharoen. (2007) A randomized clinical trial of closed hemorrhoidectomy under local perianal block versus spinal anesthesia . Chulalongkorn University/Bangkok.