<qa>  How many individuals from each intervention group will be asked to provide seven venous blood samples?Interventions and evaluation Clinical follow-up of participants and sampling will be done twice daily for the first 4 days days 0, 1, 2 and 3 and once daily on days 4, 5, 7, 10, 14 and 28. At each time-point participants will be examined clinically except for day 28 and a structured questionnaire is used to determine the occurrence of side effects. Furthermore, laboratory safety parameters are measured, including haematology, biochemistry, and urine dipstick for haemoglobinuriaurobilinogen. Five individuals from each intervention group total of 10 will also be asked to provide seven venous blood samples of less than 1 mls each on days 0, 1 and 2 to study pharmacokinetics of PQ in G6PD deficient individuals 