A mapping review of worldwide current and previous cohort research programmes in cats and dogs.

Data collection frequencies varied across the programmes, with a notable trend of more frequent data collection during the earlier stages of the animals’ lives.

also in 2,380 other papers

There was an apparent trend that the more data sources were used, the more promotion methods were used ( S2 Fig ) For 5/19 (26%) programmes, information about promotion methods used to attract animal guardians was not available ( Fig 5 ).

also in 709 other papers