A Dose Escalation Study Of PF-06801591 In Melanoma, Head And Neck Cancer (SCCHN), Ovarian, Sarcoma, Non-Small Cell Lung Cancer, Urothelial Carcinoma or Other Solid Tumors. A Phase 1, Open-Label, Dose Escalation and Expansion Study of PF-06801591 in Patients With Locally Advanced or Metastatic Melanoma, Squamous Cell Head and Neck Cancer, Ovarian Cancer, Sarcoma, Non-small Cell Lung Cancer, Urothelial Carcinoma or Other Solid Tumors