Global Cytotoxic Drugs Market Size, Trends, By Route of Administration (Parenteral and Oral), By Drug Type (Alkylating Agents, Antitumor Antibiotics, Antimetabolites, Plant Alkaloids, and Other Drug Types), By Application (Breast Cancer, Prostate Cancer, Lung Cancer, Pancreatic Cancer, and Other Applications), and By Region (North America, Latin America, Europe, Asia Pacific, Middle East, and Afri