Herman P Schaalma

Standard care impact on effects of highly active antiretroviral therapy adherence interventions: A meta-analysis of randomized controlled trials.

Charles Abraham, Gerjo Kok, Wolfgang Viechtbauer, 2010, Archives of internal medicine.

Standard care quality determines treatment outcomes in control groups of HAART-adherence intervention studies: implications for the interpretation and comparison of intervention effects.

Gerjo Kok, Wolfgang Viechtbauer, Marijn de Bruin, 2009, Health psychology : official journal of the Division of Health Psychology, American Psychological Association.

Diagnosis of sustainable collaboration in health promotion – a case study

N. D. de Vries, H. Schaalma, I. Mur-Veeman, 2008, BMC public health.

An AIDS Risk Reduction Program for Dutch Drug Users: An Intervention Mapping Approach to Planning

Gerjo Kok, L. K. Bartholomew, L Kay Bartholomew, 2003, Health promotion practice.

The World Starts With Me: A multilevel evaluation of a comprehensive sex education programme targeting adolescents in Uganda

R. Ruiter, A. Bos, H. Schaalma, 2011, BMC public health.