“…According to the OECD classification, five studies reported data from a large metropolitan area ( 28 , 31 , 37 , 38 , 41 ). Sobral, Richmond, Rennes, Bristol, Ljubljana and Sosnowiec were classified as medium-sized urban areas ( 27 , 30 , 32 , 42 ); Barcelona, San Francisco, Lisbon, Detroit and Amsterdam were classified as metropolitan areas ( 33 , 36 , 40 , 42 ); and Noarlunga, Gulfport, Hermosa Beach, Redondo Beach and Manhattan Beach as small-size urban areas ( 29 , 34 , 43 ). Matsapha and Vancouver were classified as other urban settings ( 35 , 39 ).…”