Concealment mechanism {16b}
The randomisation is performed using an online research randomiser by the chief engineer at Quantum TX. He will only share the randomisation results with the biostatistician at the Chinese University of Hong Kong. It will not be disclosed to the participants and assessors of this trial before the end of the treatment period. The participants will be assigned a unique RFID by which the PEMF or sham treatment will be randomly assigned to the RFID. Participants and assessors are blinded as participants will use the RFID to complete the treatment without knowing the treatment they receive.