function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blackburn, T.', 4],
    ['Borges, Paulo A. V. & Gaspar, Clara', 2],
    ['Cornelis, Marcela & Coscaron, Maria C.', 9],
    ['Ghahari, Hassan & Linnavuori, Rauno E. & Moulet, Pierre', 11],
    ['Ghahari, Hassan & Moulet, Pierre & Behnood, Saeid', 2],
    ['Ishikawa, Tadashi & Saito, Masayuki U. & Kishimoto-Yamada, Keiko', 2],
    ['Kirkaldy, George Willis', 10],
    ['Linnavuori, Rauno E.', 6],
    ['Norbiato, Margherita & Dioli, Paride & Cianferoni, Fabio', 4],
    ['Novoselsky, T. & Freidberg, A. & Dorchin, N. & Meltzer, N.', 6],
    ['TASZAKOWSK, Artur & PASIŃSKA, Agnieszka', 5],
    ['Tezcan, S. & Gulpercin, N. & Fent, M.', 2],
    ['Vinokurov, N. N. & Rudoi, V. V.', 6],
    ['Vinokurov, Nikolay N. & Rudoi, Valentin V.', 5],
    ['White, Francis Buchanan', 5],
    ['Other (9)', 10]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=89)',
    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);