Commentary on Shanahan et al. (2020): The importance of quantifying the intangible costs for family members of drug users.

José María Abellán Perpiñán, Fernando Ignacio Sánchez Martínez, Jorge Eduardo Martínez Pérez, Ildefonso Méndez, LOWERING THE ‘FLOOR’ OF THE SF‐6D SCORING ALGORITHM USING A LOTTERY EQUIVALENT METHOD Health Economics. ,vol. 21, pp. 1271- 1285 ,(2012) , 10.1002/HEC.1792

John E. Brazier, Jennifer Roberts, The estimation of a preference-based measure of health from the SF-12. Medical Care. ,vol. 42, pp. 851- 859 ,(2004) , 10.1097/01.MLR.0000135827.18610.0D

Chao-Hsiun Tang, Jin-Tan Liu, Ching-Wen Chang, Wen-Ying Chang, Willingness to pay for drug abuse treatment: results from a contingent valuation study in Taiwan. Health Policy. ,vol. 82, pp. 251- 262 ,(2007) , 10.1016/J.HEALTHPOL.2006.09.007

Johan Jarl, Pia Johansson, Antonina Eriksson, Mimmi Eriksson, Ulf-G. Gerdtham, Örjan Hemström, Klara Hradilova Selin, Leif Lenke, Mats Ramstedt, Robin Room, The societal cost of alcohol consumption: an estimation of the economic and human cost including health effects in Sweden, 2002 European Journal of Health Economics. ,vol. 9, pp. 351- 360 ,(2008) , 10.1007/S10198-007-0082-1

Kristy Sanderson, Gavin Andrews, Justine Corry, Helen Lapsley, Using the effect size to model change in preference values from descriptive health status. Quality of Life Research. ,vol. 13, pp. 1255- 1264 ,(2004) , 10.1023/B:QURE.0000037482.92757.82

Jacinto Mosquera Nogueira, Eva Rodríguez-Míguez, Using the SF-6D to measure the impact of alcohol dependence on health-related quality of life European Journal of Health Economics. ,vol. 16, pp. 347- 356 ,(2015) , 10.1007/S10198-014-0627-Z

Maayan Schori, Valuation of Drug Abuse: A Review of Current Methodologies and Implications for Policy Making. Research on Social Work Practice. ,vol. 21, pp. 421- 431 ,(2011) , 10.1177/1049731510386627

Ioana Popovici, Michael T. French, James R. McKay, Economic evaluation of continuing care interventions in the treatment of substance abuse: recommendations for future research. Evaluation Review. ,vol. 32, pp. 547- 568 ,(2008) , 10.1177/0193841X08316311

Claude Jeanrenaud, Sonia Pellegrini, Valuing Intangible Costs of Alcohol Dependence : a Contingent Valuation Study Revue D Economie Politique. ,vol. 117, pp. 813- 825 ,(2007) , 10.3917/REDP.175.0813

D. Bishai, J. Sindelar, E.P. Ricketts, S. Huettner, L. Cornelius, J.J. Lloyd, J.R. Havens, C.A. Latkin, S.A. Strathdee, Willingness to pay for drug rehabilitation: Implications for cost recovery Journal of Health Economics. ,vol. 27, pp. 959- 972 ,(2008) , 10.1016/J.JHEALECO.2007.11.007