This is a pilot step wedge trial, with graduated, random intervention roll-out across the clinical setting in four steps over five time intervals. Eligible patients presenting to the clinic during the study period will be allocated to intervention or control depending on whether the PCP they have booked to see has had the intervention 'turned-on'. The order determining when each PCP and his or her team change from control to intervention is randomly assigned. This design was chosen to avoid the risk of intervention contamination and to enable logistics of implementation. The teams will receive the control and intervention according to the following schedule: