Non-invasive hemoglobin screening device: a promising digital method for reducing anemia prevalence through routine screening and timely intervention oleh Partha Pratim Das Mahapatra, Chaitali Roy, Komal Agarwal, Sonal Deep Sharma, Sudip Roy Chowdhury, Sandeep Sharma, Harshavardhan Rajagopal, Dayanidhi Meher