function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Collins, Nancy & Coronado-Gonzalez, Isabel Margarita', 1],
    ['Collins, Nancy & Gonzalez, Isabel Margarita Coronado', 1],
    ['Collins, Nancy & Lightfoot, David C.', 1],
    ['Collins, Nancy & Schneider, Ken R.', 1],
    ['Collins, Nancy & van den Berghe, E. P. & Carson, Lisa', 3],
    ['Desutter-Grandcolas, Laure', 1],
    ['Desutter-Grandcolas, Laure & Anso, Jérémy & Jourdan, Hervé', 2],
    ['Gu, J. X. & Dai, L. & Huang, J. H.', 2],
    ['Hollier, John & Bruckner, Harald & Heads, Sam W.', 6],
    ['Kim, Tae-Woo & Puskás, Gellért', 1],
    ['Silva, Hugo Miguel & Avivar-Lozano, Laura & Gomes, Goncalo', 2],
    ['Skejo, Josip & Rebrina, Fran & Szövényi, Gergely', 2],
    ['Yong, Sheyla & Perez-Gelabert, Daniel E.', 2],
    ['Zefa, Edison & Martins, Luciano De Pinho', 6],
    ['Zefa, Edison & Neutzling, Alexandre Schneid & Redü, Darlan Rutz', 2],
    ['Other (9)', 9]
  ]);
  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);