Question: is this a 2) strong advice, 1) weak advice 0) no advice?

(An et al, 2006; Fiore, Jaen, & Baker, May 2008; Zhu et al, 2002) Prior patient navigation studies (K. Lasser et al, 2011; Phillips et al, 2011) have demonstrated how navigators can motivate patients to engage in short-term behavior change such as undergoing a one-time procedure (e.g. colonoscopy or mammogram). 
user
This is no advice
assistant