TY - RPRT TI - 18ph+ is a so-called normal chromosomal variant. AU - R S Verma AU - A Babu PY - 1987 DO - 10.1111/j.1399-0004.1987.tb03164.x UR - https://pubmed.ncbi.nlm.nih.gov/3436094/ ID - 3436094 ER -