function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Allen, Timothy Field', 19],
    ['Beurel, Simon & Bachelier, Julien B. & Munzinger, Jerome', 1],
    ['Blume, Carl Ludwig von', 2],
    ['Kanehira, Ryozo & Hatusima, Sumihiko', 5],
    ['Kostermans, Andre Joseph Guillaume Henri', 35],
    ['Lauterbach, Carl (Karl) Adolf Georg', 1],
    ['Molino, Jean-François & Sabatier, Daniel & Grenand, Pierre', 1],
    ['Moraes, Pedro Luís Rodrigues De & Ribeiro, Henrique Lauand', 1],
    ['Munzinger, Jérôme & McPHERSON, Gordon', 4],
    ['Schlechter, Fridrich Richard Rudolf', 1],
    ['Teschner, Hans', 12],
    ['Werff, Henk Van Der', 9],
    ['Werff, Henk van der', 9],
    ['White, J.', 2],
    ['van der Werff, Henk', 6],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=109)',
    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);