function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Coil, William H. & Kuntz, Robert E', 1],
    ['Hassan, S. H. & Khidr, A. E. - A. A. & Samak, O. A. A.', 1],
    ['Karyakarte, P. P.', 1],
    ['Margarita Ostrowski de Núñez & Nathalia J. Arredondo', 1],
    ['Paredes-León, Ricardo & García-Prieto, Luis', 1],
    ['Szidat, L.', 1],
    ['Tubangui, Marcos A. & Masiluñgan, Victoria A.', 1],
    ['Watson, Donald E.', 1],
    ['Zaidi, Daulat Ali & Khan, Daler', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=9)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);