1. Siblings of childen with trachea-oesophageal dysraphism;Baird;Can Med Assoc J,1981
2. Congenital anomalies of the central nervous system. Incidence in British Columbia, 1952-72;Trimble;Teratology,1978
3. The incidence of malformations in Birmingham, England, 1950-1959;Leck;Teratology,1968
4. Esophageal atresia and tracheo-oesophageal distula;Cudmore,1978
5. Atlas of British Columbia;Farley,1979