B Krol

The measurement of social support in the 'European Research on Incapacitating Diseases and Social Support': the development of the Social Support Questionnaire for Transactions (SSQT).

R. Sanderman, W. Krijnen, W. V. D. van den Heuvel, 1995, Social science & medicine.

The Groningen Activity Restriction Scale for measuring disability: its utility in international comparisons.

F Guillemin, F. Guillemin, R. Sanderman, 1994, American journal of public health.