Implementation of a Web-Based Program for Advance Care Planning and Evaluation of its Complexity With the Nonadoption, Abandonment, Scale-Up, Spread, And Sustainability (NASSS) Framework: Qualitative Evaluation Study

Doris van der Smissen   ^{1 *} , PhD ;   Maud A Schreijer   ^{1 *} , MSc ;   Lisette J E W C van Gemert-Pijnen   ² , PhD ;   Rudolf M Verdaasdonk   ³ , PhD ;   Agnes van der Heide   ¹ , MD, PhD ;   Ida J Korfage   ^{1 *} , PhD ;   Judith A C Rietjens   ^{1, 4 *} , PhD

¹ Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands, The

² Psychology, Health & Technology, Faculty of Behavioural, Management and Social Sciences, University of Twente, Enschede, Netherlands, The

³ Health Technology Implementation, Faculty of Science and Technology, University of Twente, Enschede, Netherlands, The

⁴ Department of Design, Organisation and Strategy, Faculty of Industrial Design Engineering, Delft University of Technology, Delft, Netherlands, The

*these authors contributed equally