function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['DeMarmels, Jurg', 1],
    ['Dijkstra, Klaas-Douwe B. & Kalkman, Vincent J. & Dow, Rory A.', 1],
    ['Ellenrieder, Natalia Von & Garrison, Rosser W.', 2],
    ['Pessacq, P. & Costa, J. M.', 2],
    ['Pessacq, Pablo', 30],
    ['Pessacq, Pablo & Anjos-Santos, Danielle', 2],
    ['Takiya, Daniela Maeda & Santos, Allan Paulo Moreira', 4],
    ['Tennessen, K. J. & Garrison, R. W.', 1],
    ['Vilela, Diogo Silva & Neiss, Ulisses Gaspar & Koroiva, Ricardo', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=44)',
    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);