Infertility – a disease or not according to the WHO definition Journal title: Medycyna Ogólna i Nauki o Zdrowiu Authors: Celina Łepecka-Klusek, Anna B. Pilewska-Kozak, Grzegorz Jakiel Subject(s): Orthopedics, Health Care Sciences & Services, Medicine, Research & Experimental, Public, Environmental & Occupational Health, Primary Health Care