function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alston, Arthur Hugh Garfit', 1],
    ['Brause, Guido Georg Wilhelm', 6],
    ['Carmes, Amanda Angélica & Dechoum, Michele de Sá', 2],
    ['Chambers, Thomas Carrick', 2],
    ['Chambers, Thomas Carrick & Edwards, Sydenham Teast', 1],
    ['Christenhusz, Maarten J. M. & Zhang, Xian-Chun', 20],
    ['Christenhusz, Maarten J. M. & Zhang, Xian-chun', 1],
    ['Christensen, Carl C.', 1],
    ['Copeland, Edwin Bingham', 1],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 2],
    ['Info Flora', 1],
    ['Jarvis, Charlie', 5],
    ['Rakotondrainibe, France & Jouy, Alain & Meyer, Sylvie', 21],
    ['Rosenstock, Eduard', 2],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 4],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=73)',
    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);