Study design A cross-sectional survey was conducted using face-to-face interviews, direct observation of the rubber tapping work and a video-based analysis of the working postures using the Rapid Upper Limb Assessment (RULA) method
Study designA cross-sectional survey was conducted using face-to-faceinterviews, direct observation of the rubber tapping work anda video-based analysis of the working postures using the RapidUpper Limb Assessment (RULA) method