function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Broun, Thomas', 17],
    ['Ferreira, Vinicius De Souza', 1],
    ['Frank H. Hennemann & Oskar V. Conle & Daniel E. Perez-Gelabert', 1],
    ['Kuschel, Guillermo Dr.', 2],
    ['Lyal, Christopher H. C. & Alonso-Zarazaga, Miguel A.', 1],
    ['Marshall, Guy Anstruther Knox', 1],
    ['Pérez-Hernández, Cisteil Xinum', 1],
    ['Spanton, Timothy G. & Anderson, Robert S.', 31],
    ['Thompson, Richard T.', 15],
    ['Yunakov, Nikolai & Nazarenko, Vitalij & Filimonov, Rostislav', 18],
    ['Zaragoza-Caballero, Santiago & Rodríguez-Mirón, Geovanni M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=89)',
    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);