Table 1.

Search strategy of electronic databases MEDLINE and PsycINFO with EBSCO-host

Search strategy
Step 1	Practice nurse OR nurse practitioner OR primary nursing care OR primary care nurse OR primary health care nurse OR PHC nurses
Step 2	Guidance OR counselling OR communication OR advice OR health education OR health promotion OR prevention OR lifestyle behaviour OR chronic disease OR chronic illness
Step 3	Nutrition OR diet OR food OR physical activity OR exercise OR physical fitness OR weight OR overweight OR obesity OR adiposity OR corpulence
Step 4	Role OR position OR task OR duty OR responsibility OR competency OR skill OR expertise OR mission OR profession OR contribution OR lifestyle advisor OR case manager OR case management
Step 5	Cooperation OR collaboration OR teamwork OR alliance OR referral OR interdisciplinary OR multidisciplinary OR network OR delegation
Combine search 1, 2 and 3
Combine search 1, 2 and 4
Combine search 1, 2 and 5