1. Is purgation justified?;Alvarez;Surg., Gynec. & Obst.,1918
2. Postoperative gas pains;Alvarez;California State J. Med.,1918
3. Action currents in stomach and intestine;Mahoney;Am. J. Physiol.,1922
4. Preoperative and postoperative care;Taylor;J. A. M. A.,1922
5. Cause and prevention of gas pains;Cunningham;Anesth. & Analg.,1927