function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Archila, Fredy & Tribouillier-Navas, Erick', 2],
    ['Barbosa, Juliana Cruz Jardim & Caruzo, Maria Beatriz Rossi', 6],
    ['Callaghan, Christopher B. & Png, Siak K.', 26],
    ['Chen, Ronglian & Zhang, Faqi & Chen, Shilong & Chi, Xiaofeng', 7],
    ['Howell, Nathan & Krings, Alexander & Braham, Richard R', 2],
    ['Info Flora', 2],
    ['Jarvis, Charlie', 13],
    ['Linnaeus, Carolus', 8],
    ['Porter, Elaine A. & Kite, Geoffrey C. & Veitch, Nigel C.', 3],
    ['Suh, Soo-Jung', 5],
    ['Testé, Ernesto & García-Beltrán, José Angel', 4],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 4],
    ['Turner, I. M.', 31],
    ['Vázquez-García, J. Antonio & Kelly, Daniel L.', 13],
    ['Vázquez-García, J. Antonio & Tribouillier-Navas, Erick', 9],
    ['Other (23)', 29]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=164)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);