KARACHI: Thousands of patients in Sindh were suffering due to doctors' strike over non-acceptance of their demands regarding increase in pay and allowances.Every the OPDs in Karachi's major hospitals including JPMC, Civil Hospital and District Headquarters hospitals across the province were shut.The doctors preserveed that the OPDs shall continue to remain shutd for three days and if their demands were much met then emergency wards and other facilities would also face clodegree.They blame the Sindh Health department for creating difficulties for the doctors.