function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Khazali, Azhar Mohammed & Kachel, Hamid Saeid', 2],
    ['Caleb, John T. D. & Pravalikha, G. B.', 2],
    ['Crespo, Luis C & Domenech, Marc & Enguidanos, Alba', 1],
    ['Dean, David Allen', 1],
    ['Foord, S. H. & Dippenaar-Schoeman, A. S.', 2],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 5],
    ['Javed, Maqsood & Foord, Stefan H. & Tampal, Farida', 2],
    ['Jäger, Peter', 3],
    ['Lin, Yejie & Li, Shuqiang', 9],
    ['Marusik, Yuri & Fet, Victor', 19],
    ['Marusik, Yuri & Kunt, Kadir & Yagmur, Ersen', 2],
    ['Mirshamsi, Omid & Zamani, Alireza & Marusik, Yuri M.', 10],
    ['Pakawin Dankittipakul & Tippawan Singtripop', 7],
    ['Regan, C. T.', 2],
    ['Tanikawa, Akio', 2],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=77)',
    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);