Drupal-Bibcite0<style face="normal" font="default" size="100%">Using intervention mapping to develop a theory-driven, group-based complex intervention to support self-management of osteoarthritis and low back pain (SOLAS)</style><style face="normal" font="default" size="100%">Using intervention mapping to develop a theory-driven, group-based complex intervention to support self-management of osteoarthritis and low back pain (SOLAS)</style>