The Nigeria Medical Association (NMA) has warned medical and health workers to desist from what it describes as indiscriminate and incessant resort to industrial action as a means of resolving disputes, saying the continuous use of strike will worsen the nation's healthcare services.The Nigeria Medical Association (NMA) has warned medical and health workers to desist from what it describes as indiscriminate and incessant resort to industrial action as a means of resolving disputes, saying the continuous use of strike will worsen the nation's healthcare services.