[1] Kamuzu Univ Hlth Sci, Dept Adult Hlth, Lilongwe, Malawi
[2] Univ Stavanger, Fac Hlth Sci, Dept Qual & Hlth Technol, Stavanger, Norway
[3] Univ Stavanger, Fac Hlth Sci, Dept Publ Hlth, Stavanger, Norway
[4] Univ Stavanger, Fac Hlth Sci, Dept Caring & Eth, Stavanger, Norway
[5] Kamuzu Univ Hlth Sci, Fdn Sci Dept, Language & Commun, Lilongwe, Malawi
[6] Kamuzu Univ Hlth Sci, Dept Lib, Lilongwe, Malawi