function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Durán-Ramírez, Carlos Alberto & Dias, Roberto Júnio Pedroso', 1],
    ['Ganeshalingam, Archchana & Daranagama, Dinushani A.', 1],
    ['Hurdeal, Vedprakash G. & Gareth Jones, E. B.', 1],
    ['Hurdeal, Vedprakash G. & Gentekaki, Eleni & Hyde, Kevin D.', 3],
    ['Jarvis, Charlie', 4],
    ['KAZANTSEV, SERGEY V.', 1],
    ['Khuna, Surapong & Suwannarach, Nakarin & Kumla, Jaturong', 1],
    ['Leitão, Joana D. A. & Cordeiro, Thalline R. L.', 1],
    ['Linnaeus, Carolus', 2],
    ['Suwannarach, Nakarin & Kumla, Jaturong & Supo, Chantana', 1],
    ['Valle, Laia Guardia & Stoianova, Desislava', 13],
    ['Wang, Ya-Ning & Zheng, Ru-Yong', 1],
    ['Wang, Yu-Jie & Zhao, Ting & Wu, Wen-Ying & Wang, Mu', 2],
    ['Yang, Erfu & Tibpromma, Saowaluck & Dai, Dongqin', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);