function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Agassiz, Jean Louis Rodolphe', 1],
    ['Alexander, Timothy & Seehausen, Ole', 2],
    ['Artaev, Oleg & Ruchin, Alexander B.', 1],
    ['Baycelebi, Esra', 1],
    ['Bonnaterre, Joseph Pierre', 1],
    ['Curtiss, A.', 1],
    ['Denys, Gael & Dettai, Agnès & Persat, H. & Hautecoeur, M.', 1],
    ['Dybowski, B. I.', 1],
    ['Eagderi, Soheil & Mouludi-Saleh, Atta & Esmaeili, Hamid Reza', 1],
    ['Forsskål, Peter', 1],
    ['Girard, Charles Frédéric', 1],
    ['Hamilton, F. Buchanan', 1],
    ['Kovalchuk, Oleksandr M. & Wilson, Mark V. H. & Grande, Terry', 6],
    ['Linnaeus, Carolus', 10],
    ['Walbaum, J. J.', 2],
    ['Other (11)', 11]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=42)',
    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);