Prevalence and cow-level risk factors for mild and severe subclinical mastitis in intensive and extensive dairy systems in Bangladesh - Muhammad Aktaruzzaman; M. Ariful Islam; Solama Akter Shanta; Mst. Tahomina Akter; Muhammad Tofazzal Hossain; Md. Nazmul Islam; Md. Shaffiul Alam; A. K. M. Anisur Rahman (Veterinary Research Communications, 2026)