ʻO nā huahana e lawelawe i nā pono olakino o ka lehulehu. Wahi a WHO, pono e loaʻa kēia mau huahana "i nā manawa āpau, i nā kālā kūpono, i nā ʻano hana kūpono, me ka maikaʻi i ʻike ʻia a me ka ʻike kūpono, a ma ke kumukūʻai e hiki ai i ke kanaka a me ke kaiāulu ke kūʻai".