They were split into two groups; one used antibacterial products for 48 weeks, the other used ordinary cleaners.
Bahlukaniswe baba ngamaqembu amabili, kwesinye isiguli sathatha umuthi i-Aterol ngokwezinsuku eziyi-14, kanti kwesinye, izidakamizwa ezijwayelekile ezazisebenza ngama-statin.