«Uniforms and workwear: guidance for NHS employers». NHS England. 2 de abril de 2020. «Good practice – evidence-based [...]Have clean, short,unvarnished fingernails.[...]Poor practice – evidence-based[...]Wear false nails during patient care activity.»
fao.org
«Guidance on hygiene and safety in the food retail sector»(en inglés). Food and Agriculture Organization. Consultado el 27 de abril de 2023. «While working in areas where exposed food is handled, personnel should maintain a high degree of personal cleanliness and should wear a clean uniform and head gear/cap and wash hands regularly. [...] Nails should be trimmed, kept clean and without nail polish.»
