TY - JOUR JO - Reumatologia/Rheumatology SN - 0034-6233 VL - 53 IS - 2 PY - 2015 ID - 25124 TI - Letter to the EditorBetween volunteer and professional activities – a Swiss example of practice for health promotion in rheumatic diseases SP - 111 EP - 114 DA - 2015 DO - 10.5114/reum.2015.51512 UR - http://dx.doi.org/10.5114/reum.2015.51512 ER -