Open Access Journals The Open Access Journals was founded with a mission to provide free access to scientific literature for quick dissemination of scientific updates and provide source of reference and retrieval free of cost. Research fellows and professors in various disciplines submit works in the form of manuscripts which undergo quality check before being approved for publication. Clinical Investigation Volume 10, Issue 3 The knowledge of oral hygiene and oral hygiene habits during pregnancy and puerperium Vesna Liber, Rajko Fures, Sanja Malinac Malojcic, Zana Stanic, Martin Gredicak, Zlatko Hrgovic, Sanja Jaska, Dora Fures Rationale for a randomized placebocontrolled Phase 2 study of Rejuveinix RJX in COVID19 patients with acute lung injury and hypoxemic respiratory failure Kristina Cabala, Jackie Earabino, Peter Pacult, Fatih M Uckun Comparative Evaluation of MTA Pulpotomy and LaserAssisted MTA Pulpotomy in Primary Teeth A Randomized Clinical Trial Kranthi R Kumar, Maneesha Das, Gautam Singh, Malu L Madhu, Jeswin M Thomas, Arumugam Esai Amutha Prabha Healthy Behaviours and Depression among Overweight and Obese A Social Taboo in Pakistan Azhar Hussain, Madeeha Malik, Sadia Shabnum, Ayisha Hashmi Oral dextrose vs breast milk for the pain relief of newborn infants Tharun C Varghese, Anna Susan Paul, Santhosh Soans