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Citation: Es. Callender et al., Knowledge and use of folic acid supplementation: a study of Colorado womenwhose pregnancies were affected by a fetal neural tube defect, CLIN INV M, 24(3), 2001, pp. 124-128

Authors: Orton, H Rickard, R Miller, L

Citation: H. Orton et al., Using active medical record review and capture-recapture methods to investigate the prevalence of Down syndrome among live-born infants in Colorado, TERATOLOGY, 64, 2001, pp. S14-S19

Authors: Rickard, R

Citation: R. Rickard, TRAM and DIEP flap zones, BR J PL SUR, 54(3), 2001, pp. 272-273

Authors: Kirby, R Petrini, J Alter, C Flood, TJ Hughes, TE Deosaransingh, K Wynne, JW Miller, L Orton, H Rickard, R Beres, LM Olguin, M Druschel, C Hughes, JP Canfield, M Mattison, D

Citation: R. Kirby et al., Collecting and interpreting birth defects surveillance data by Hispanic ethnicity: A comparative study, TERATOLOGY, 61(1-2), 2000, pp. 21-27

Authors: Orton, H Rickard, R Gabella, B

Citation: H. Orton et al., Capture-recapture estimation using statistical software, EPIDEMIOLOG, 10(5), 1999, pp. 563-564