1. O’Connor RW. Managing data quality through automation.Toxicology 1987; 47: 109–118.
2. Williams RL. Large scale perinatal data systems using vital statistics: In : Harris TR, Bahr JP, eds.The Use of Computers in Perinatal Medicine. New York : Praeger Publishers, 1982 : 33–81.
3. The University of Illinois Perinatal Database system utilizes the following computer software : INFORMIX, a relational database management product of Relational Database Systems, Inc., Palo Alto, Ca; SIR/DBMS, a database management product of ISI, Inc., Northbrook, I1; SAS, a statistical analysis product of SAS Institute Inc., Cary, NC; and PL/I, a programming language product of IBM.
4. Winegar A, Spellacy WN, Vidyasagar D. Peterson PQ. A system to monitor patient care in a perinatal region.Am J Obs and Gyne 1983; 145: 39–43.