BYRNE, A. creator text Documental sp 2001 monographic spa eng general Dosis Drogodependencias Metadona Opiáceos Programas de bajo umbral Programas de mantenimiento Adicciones Vol. 1, no. 3 (1998), p. 13-14 \\Srvdatos\siis\docus\Revistas electrónicas\Journal of Maintenance in the Addictions R.1640\1998\Use of Serum Levels for Optimising Doses.pdf https://www.haworthpress.com/store/E-Text/View_EText.asp?sid=SQVE2X39TUPW9KDA3US9BNQSH7DT6VG9&a=3&s=J126&v=1&i=3&fn=J126v01n03%5F04 \\Srvdatos\siis\docus\Revistas electrónicas\Journal of Maintenance in the Addictions R.1640\1998\Use of Serum Levels for Optimising Doses.pdf https://www.haworthpress.com/store/E-Text/View_EText.asp?sid=SQVE2X39TUPW9KDA3US9BNQSH7DT6VG9&a=3&s=J126&v=1&i=3&fn=J126v01n03%5F04 010523 20141212095325.0