Case NGO characteristics.

<p>Case NGO characteristics.</p

Summary of methods.

<p>Summary of methods.</p

Factors affecting availability of funds, time and skills to conduct research in NGOs.

<p>Factors affecting availability of funds, time and skills to conduct research in NGOs.</p

Thematic framework for synthesis.

(PDF)</p

Projects and reports used for the synthesis.

Projects and reports used for the synthesis.</p

Country development and health system status [31–33].

Country development and health system status [31–33].</p

Reports included in the synthesis.

(PDF)</p

CHW cadres referred to in this paper.

CHW cadres referred to in this paper.</p