AU - HELLSTROM H, FISHER ER TI - BEnign retroperitoneal mesenchymoma (hamartoma) PT - JOUR DP - 1959 TA - A.M.A. Archives of Surgery pages = {975-978}, VI - 78 IP - 6 AID - 10.1001/archsurg.1959.04320060163027 [doi] 4100 - http://dx.doi.org/10.1001/archsurg.1959.04320060163027 SO - A.M.A. Archives of Surgery June 1, 1959 78(6):975