function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alcover, Josep Antoni & Pieper, Harald & Pereira, Fernando', 16],
    ['Barcelos, Luis MD & Rodrigues, Pedro R & Bried, Joel', 2],
    ['Boddaert, Pieter', 1],
    ['Castro-Vargas, Fernando & Cruz-Mendivelso, Yerson', 1],
    ['Hermann, Johann', 1],
    ['Linnaeus, Carolus', 6],
    ['Maley, James Michael & van Dort, John & Juárez, Roselvy C.', 1],
    ['Miller, John Frederick', 1],
    ['Potts, Thomas Henry', 1],
    ['Takano, Oona M. & Steadman, David W.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=32)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);