Copley-Merriman C, Stevinson K, Liu FX, Wang J, Mauskopf J, Zimovetz EA, Chmielowski B. Direct costs associated with adverse events of systemic therapies for advanced melanoma: Systematic literature review. Medicine. 2018 Aug;97(31):e11736. doi: 10.1097/MD.0000000000011736
Phanikumar CV, Maitra B. Modeling willingness-to-pay values for rural bus attributes under different trip purposes. JTRF. 2006;45(2):31-44. doi: 10.22004/ag.econ.206787