pregnancy dr faisal abdullah faisal abdullah child death preterm labor' abnormal labor pregnant cme lipika rani biswas lipika fmch preterm labor preterm labour labour labor post partum hemorrhage sensory loss paralytic ileus hypokalemia pph ectopic pregnancy obstetrics obs gynae unruptured tubal pregnancy breast cancer medical surgery medicine spondylosis ankylosis rheumatology bangladesh romanus lesion ivory corner sign shiny corner sign bamboo spine appearance bamboo spine sclerosis sacroiliac joint squaring of vertebra medicine made easy faisalization trolley track sign dagger sign sacrooilitis ankylosing spondylitis piloerection rigor chills mechanism of fever hyperpyrexia hyperthermia feverish fever bangla pathophysiology of fever fever
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