TY - JOUR T1 - Foot and ankle Osteoarthritis and Cognitive impairment in retired UK Soccer players (FOCUS): protocol for a cross-sectional comparative study with general population controls JO - BMJ Open PY - 2022/04/04 AU - Espahbodi S AU - Fernandes G AU - Hogervorst E AU - Thanoon A AU - Batt M AU - Fuller CW AU - Fuller G AU - Ferguson E AU - Bast T AU - Doherty M AU - Zhang W ED - DO - DOI: 10.1136/bmjopen-2021-054371 PB - BMJ VL - 12 IS - 4 Y2 - 2025/05/30 ER -