Friedmann, P. D., Zhang, Z., Hendrickson, J., Stein, M. D., & Gerstein, D. R. (2003). Effect of Primary Medical Care on Addiction and Medical Severity in Substance Abuse Treatment Programs. Blackwell Science Inc.

Friedmann, Peter D., Zhiwei Zhang, James Hendrickson, Michael D. Stein, and Dean R. Gerstein. Effect of Primary Medical Care On Addiction and Medical Severity in Substance Abuse Treatment Programs. Blackwell Science Inc, 2003.

Friedmann, Peter D., et al. Effect of Primary Medical Care On Addiction and Medical Severity in Substance Abuse Treatment Programs. Blackwell Science Inc, 2003.