Symptoms and medical conditions in 204 912 patients visiting primary health-care practitioners in India: a 1-day point prevalence study (the POSEIDON study) oleh Dr. Sundeep Salvi, MD, Komalkirti Apte, MBBS, Sapna Madas, MSc, Monica Barne, MBBS, Sushmeeta Chhowala, MSc, Tavpritesh Sethi, PhD, Kunal Aggarwal, BTech, Anurag Agrawal, MD, Jaideep Gogtay, MD