As indicated in Sielken et al. [24], the analyses of myeloid
neoplasm and lymphoid neoplasm have two important caveats:
(1) the diagnoses are based on death certificates and oftentimes
the medical records are not detailed enough to assess the level of
specificity needed to distinguish among different types of
neoplasm and (2) the classification for myeloid neoplasm and
lymphoid neoplasm used here assumes a common etiology for
the groupings, which has not been well-established in epidemiological
studies.