Fig. 5

Data collection sensors. In the left side, Sensedocâ„¢ sensor (Accelerometer and GPS) which should be worn in a belt around the waist. In the middle, MicroPemâ„¢ (pollution sensor) which should be worn in a bag or purse with the pipe as close to the airway as possible. In the right side, the MicroPemâ„¢ and the Sensedocâ„¢. Source: Figure created by authors