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Hannan Ayub, Muhammad Zaid, Muhammad Saeed Siddiqui, Sana Javed 2022. Adherence on Recommended Guidelines for Pre-Operative Routine Investigations in ASA (American Society of Anaesthesiologists) Grade 1 and 2 by Anaesthesiologists working at Tertiary Care Hospitals in the Province of Sindh. Pakistan Journal of Medical & Health Sciences. 16, 08 (Sep. 2022), 311. DOI:https://doi.org/10.53350/pjmhs22168311.