A structured review of reasons for ecstasy use and related behaviours: pointers for future research by Kok Gerjo, Peters Gjalt-Jorn

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Predictors of healthcare professionals' intention and behaviour to encourage physical activity in patients with cardiovascular risk factors by Kok Gerjo, Sassen Barbara, Vanhees Luc

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Social-cognitive correlates of risky adolescent cycling behavior by Ruiter Robert AC, Feenstra Hans, Kok Gerjo

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Careers in ecstasy use: do ecstasy users cease of their own accord? Implications for intervention development by Schaalma Herman P, Kok Gerjo, Peters Gjalt-Jorn

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Supporting Health Care Professionals to Improve the Processes of Shared Decision Making and Self-Management in a Web-Based Intervention: Randomized Controlled Trial by Sassen, Barbara, Kok, Gerjo, Schepers, Jan, Vanhees, Luc

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Methods for environmental change; an exploratory study by Kok Gerjo, Gottlieb Nell H, Panne Robert, Smerecnik Chris

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Cardiovascular risk profile: Cross-sectional analysis of motivational determinants, physical fitness and physical activity by Kiers Henri, Schaalma Herman, Kok Gerjo, Sassen Barbara, Vanhees Luc

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Monitoring Dietary Intake and Physical Activity Electronically: Feasibility, Usability, and Ecological Validity of a Mobile-Based Ecological Momentary Assessment Tool by Spook, Jorinde Eline, Paulussen, Theo, Kok, Gerjo, Van Empelen, Pepijn

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Constructing a Theory- and Evidence-Based Treatment Rationale for Complex eHealth Interventions: Development of an Online Alcohol Intervention Using an Intervention Mapping Approac... by Brendryen, Håvar, Johansen, Ayna, Nesvåg, Sverre, Kok, Gerjo, Duckert, Fanny

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Promoting STI testing among senior vocational students in Rotterdam, the Netherlands: effects of a cluster randomized study by Wolfers Mireille, Kok Gerjo, Looman Caspar, de Zwart Onno, Mackenbach Johan

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Correlates of STI testing among vocational school students in the Netherlands by Mackenbach Johan P, Kok Gerjo, Wolfers Mireille EG, de Zwart Onno

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A Web-Based Intervention for Health Professionals and Patients to Decrease Cardiovascular Risk Attributable to Physical Inactivity: Development Process by Sassen, Barbara, Kok, Gerjo, Mesters, Ilse, Crutzen, Rik, Cremers, Anita, Vanhees, Luc

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Public health: disconnections between policy, practice and research by Kok Gerjo, van Oers Hans AM, Jansen Maria WJ, de Vries Nanne K

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Behavioural intentions in response to an influenza pandemic by Schaalma Herman, Meertens Ree, Gelissen Roger, Jonkers Ruud, Kok Gerjo, de Zwart Onno

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Reasons for compliance or noncompliance with advice to test for hepatitis C via an internet-mediated blood screening service: a qualitative study by Prins Maria, Urbanus Anouk T, Heijman Titia, Zuure Freke R, Kok Gerjo, Davidovich Udi

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Effective elements of school health promotion across behavioral domains: a systematic review of reviews by Peters Louk WH, Kok Gerjo, Ten Dam Geert TM, Buijs Goof J, Paulussen Theo GWM

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Correlates of delayed sexual intercourse and condom use among adolescents in Uganda: a cross-sectional study by Rijsdijk Liesbeth E, Bos Arjan ER, Lie Rico, Ruiter Robert AC, Leerlooijer Joanne N, Kok Gerjo

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Evaluation of a school-based HIV prevention intervention among Yemeni adolescents by Crutzen Rik, Al-Sakkaf Khaled, Basaleem Huda, Al-Iryani Buthaina, Kok Gerjo, van den Borne Bart

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The Active <it>plus </it>protocol: systematic development of two theory- and evidence-based tailored physical activity interventions for the over-fifties by de Vries Hein, Kok Gerjo, van Stralen Maartje M, Mudde Aart N, Bolman Catherine, Lechner Lilian

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The Influence of Two Different Invitation Letters on Chlamydia Testing Participation: Randomized Controlled Trial by ten Hoor, Gill, Hoebe, Christian JPA, van Bergen, Jan EAM, Brouwers, Elfi EHG, Ruiter, Robert AC, Kok, Gerjo

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