AU - BAKER DH, MAISEL B, GOLDBERG HP TI - USe of pneumoperitoneum in differential diagnosis of paracardiac masses in children PT - JOUR DP - 1959 TA - A.M.A. Archives of Surgery pages = {63-67}, VI - 79 IP - 1 AID - 10.1001/archsurg.1959.04320070067011 [doi] 4100 - http://dx.doi.org/10.1001/archsurg.1959.04320070067011 SO - A.M.A. Archives of Surgery July 1, 1959 79(1):63