function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bonelli, Franco Andrea', 1],
    ['Borges, Paulo A. V. & Gaspar, Clara', 2],
    ['De Bormans, Auguste', 1],
    ['Erichson, Wilhelm Ferdinand', 1],
    ['Fabricius, Johann Christian', 2],
    ['García-París, Mario & Jurado-Angulo, Pilar', 1],
    ['Ghahari, H. & Hayat, R. & Tabari, M. & Ostovan, H. & Imani, S.', 1],
    ['Girod, Christophe & Matzke, Danilo', 1],
    ['Herhold, Hollister W & Davis, Steven R & Degrey, Samuel P', 1],
    ['Karthik, C. M. & Kalleshwaraswamy, C. M.', 1],
    ['Kočárek, Petr', 4],
    ['Linnaeus, Carolus', 3],
    ['Miles, Claire', 8],
    ['Sakenin, H. & Samin, N. & Imani, S. & Rastegari, J.', 6],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);