function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bezděk, Aleš & Hájek, Jiří', 2],
    ['Carvalho, Edrielly C. & Maldaner, Maria Eduarda', 1],
    ['Chamorro, William & Marin-Armijos, Diego & senjo, Angelico', 8],
    ['Cupello, Mario & Vaz-De-Mello, Fernando Z.', 6],
    ['Cárdenas-Bautista, Johann Stephens', 1],
    ['Edmonds, W. D.', 1],
    ['Edmonds, W. D. & Zidek, J.', 40],
    ['Gillett, Conrad P. D. T. & Gillett, P. T. & E. D. T, James', 5],
    ['Hielkema, Auke J. & Hielkema, Meindert A.', 10],
    ['Kohlmann, Bert & Solís, Ángel', 1],
    ['Maldaner, Maria E. & Cupello, Mario & Ferreira, Daniela C.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=76)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);