1. Neonatal addiction problem increasing;Zimmerman;Drug Dependence,1972
2. Neonatal narcotic addiction: 10 year observation;Zelson;Paediatrics,1971
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4. Cited in Goodfriend;Terwilliger;American Journal of Obstetrics and Gynaecology,1934
5. Cited in Goodfriend et al;Tate;American Journal of Obstetrics and Gynaecology,1899