function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dursun, Ahmet & Fent, Meral', 2],
    ['Forero, Dimitri', 5],
    ['Ghahari, Hassan & Chérot, Frédéric', 22],
    ['Jerinic-Prodanovic, Dusanka & Protic, Ljiljana', 1],
    ['Jung, Sunghoon & Kim, Junggon & Oh, Sumin & Heiss, Ernst', 3],
    ['Konstantinov, Fedor V. & Luo, Zhaohui & Vinokurov, Nikolay N.', 1],
    ['Konstantinov, Fedor V. & Namyatova, Anna A.', 5],
    ['Konstantinov, Fedor V. & Vinokurov, Nikolay N.', 2],
    ['Linnavuori, Rauno E.', 20],
    ['Matocq, Armand & Pagola-Carte, Santiago', 1],
    ['Norbiato, Margherita & Dioli, Paride & Cianferoni, Fabio', 1],
    ['Rodrigues, Higor D. D. & Ferreira-Keppler, Ruth L.', 1],
    ['Sakenin, H. & Samin, N. & Rastegari, J. & Havaskary, M.', 1],
    ['Samin, Najmeh & E, Rauno', 5],
    ['Yasunaga, Tomohide', 3],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=76)',
    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);